# January–August 2016 statewide opinion polling for the 2016 United States presidential election

Statewide polls for the 2016 United States presidential election are as follows. The polls listed here, by state, are from January 1 to August 31, 2016, and provide early data on opinion polling between a possible Republican candidate against a possible Democratic candidate.
Note some states had not conducted polling yet or no updated polls were present from January 1 to August 31, 2016.

## Alabama

9 electoral votes (Republican in 2008) 60%–39% (Republican in 2012) 61%–38%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| News-5/Strategy Poll | July 19, 2016 | Hillary Clinton | 33% | Donald Trump | 57% | 24 | 4,100 | ± 2.0% |

## Alaska

3 electoral votes (Republican in 2008) 59%–38% (Republican in 2012) 55%–41%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Ivan Moore Research | June 16–20, 2016 | Hillary Clinton | 41% | Donald Trump | 45% | 4 | 670 | ? |
| Alaska Dispatch News/Ivan Moore Research | January 2016 | Hillary Clinton | 44.1% | Donald Trump | 49.3% | 5.2 | 651 | ? |
| Alaska Dispatch News/Ivan Moore Research | January 2016 | Hillary Clinton | 37.5% | Ted Cruz | 56.9% | 19.4 | 651 | ? |
| Alaska Dispatch News/Ivan Moore Research | January 2016 | Hillary Clinton | 37.9% | Marco Rubio | 56.7% | 18.8 | 651 | ? |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green Party | % | Lead margin | Sample size | Margin of error |
| Moore Information | August 27–29, 2016 | Hillary Clinton | 29% | Donald Trump | 39% | Gary Johnson | 10% | Jill Stein | 4% | 10 | 500 | ± 4% |
| Ivan Moore Research | June 16–20, 2016 | Hillary Clinton | 30% | Donald Trump | 39% | Gary Johnson | 16% | Jill Stein | 6% | 9 | 670 | ? |

## Arizona

11 electoral votes (Republican in 2008) 53%–45% (Republican in 2012) 53%–44%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 26–28, 2016 | Hillary Clinton | 43% | Donald Trump | 46% | 3 | 837 | ± 3.4% |
| CNN/ORC | August 18–23, 2016 | Hillary Clinton | 44% | Donald Trump | 49% | 5 | 809 | ± 3.5% |
| Public Policy Polling | June 22–23, 2016 | Hillary Clinton | 40% | Donald Trump | 44% | 4 | 691 | ± 3.7% |
| OH Predictive Insights | June 20, 2016 | Hillary Clinton | 47% | Donald Trump | 42% | 5 | 1,060 | ± 3.01% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 39% | Donald Trump | 45% | 6 | 300 | ± 5.66% |
| Public Policy Polling | May 13–15, 2016 | Hillary Clinton | 41% | Donald Trump | 45% | 4 | 896 | ± 3.3% |
| Public Policy Polling | May 13–15, 2016 | Bernie Sanders | 45% | Donald Trump | 44% | 1 | 896 | ± 3.3% |
| Behavior Research Center | April 4–11, 2016 | Hillary Clinton | 42% | Donald Trump | 35% | 7 | 564 | ± 4.2% |
| Behavior Research Center | April 4–11, 2016 | Hillary Clinton | 38% | Ted Cruz | 43% | 5 | 564 | ± 4.2% |
| Behavior Research Center | April 4–11, 2016 | Hillary Clinton | 32% | John Kasich | 44% | 12 | 564 | ± 4.2% |
| Behavior Research Center | April 4–11, 2016 | Bernie Sanders | 54% | Donald Trump | 33% | 21 | 564 | ± 4.2% |
| Behavior Research Center | April 4–11, 2016 | Bernie Sanders | 48% | Ted Cruz | 34% | 14 | 564 | ± 4.2% |
| Behavior Research Center | April 4–11, 2016 | Bernie Sanders | 47% | John Kasich | 33% | 14 | 564 | ± 4.2% |
| Merrill Poll/WestGroup | March 7–11, 2016 | Hillary Clinton | 38% | Donald Trump | 38% | Tied | 701 | ± 3.7% |
| Merrill Poll/WestGroup | March 7–11, 2016 | Hillary Clinton | 35% | Ted Cruz | 41% | 6 | 701 | ± 3.7% |
| Merrill Poll/WestGroup | March 7–11, 2016 | Bernie Sanders | 39% | Donald Trump | 36% | 3 | 701 | ± 3.7% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Arizona Republic/Morrison/Cronkite News | August 17–31, 2016 | Hillary Clinton | 35% | Donald Trump | 34% | Gary Johnson | 7% | Jill Stein | 2% | 1 | 704 | ± 3.3% |
| OH Predictive Insights | August 25–27, 2016 | Hillary Clinton | 40% | Donald Trump | 39% | Gary Johnson | 7% | Jill Stein | 1% | 1 | 728 | ±3.63% |
| CNN/ORC | August 18–23, 2016 | Hillary Clinton | 38% | Donald Trump | 45% | Gary Johnson | 12% | Jill Stein | 4% | 7 | 809 | ± 3.5% |
| CBS News/YouGov | August 2–5, 2016 | Hillary Clinton | 42% | Donald Trump | 44% | Gary Johnson | 5% | Jill Stein | 2% | 2 | 1,095 | ± 4.8% |
| OH Predictive Insights | August 1, 2016 | Hillary Clinton | 45% | Donald Trump | 43% | Gary Johnson | 4% | Jill Stein | 1% | 2 | 996 | ±3.0% |
| Integrated Web Strategy | July 29, 2016 | Hillary Clinton | 41% | Donald Trump | 49% | Gary Johnson | 3% | Jill Stein | 1% | 8 | 679 | ± 3.76% |
| Public Policy Polling | May 13–15, 2016 | Hillary Clinton | 38% | Donald Trump | 40% | Gary Johnson | 6% | Jill Stein | 2% | 2 | 896 | ± 3.3% |
| Public Policy Polling | May 13–15, 2016 | Bernie Sanders | 42% | Donald Trump | 39% | Gary Johnson | 6% | Jill Stein | 2% | 3 | 896 | ± 3.3% |

## Arkansas

6 electoral votes (Republican in 2008) 59%–39% (Republican in 2012) 61%–37%
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Talk Business/Hendrix College | June 21, 2016 | Hillary Clinton | 36% | Donald Trump | 47% | Gary Johnson | 8% | 11 | 751 | ± 3.6% |

## California

55 electoral votes (Democratic in 2008) 61%–37% (Democratic in 2012) 60%–37%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Field Research | June 8 – July 2, 2016 | Hillary Clinton | 58% | Donald Trump | 28% | 30 | 956 | ± 3.2% |
| SurveyMonkey/USC/Los Angeles Times | June 7–10, 2016 | Hillary Clinton | 59% | Donald Trump | 32% | 27 | 1,553 | ± 3% |
| CBS News/YouGov | May 31 – June 3, 2016 | Hillary Clinton | 48% | Donald Trump | 33% | 15 | 1,187 | ± 3.9% |
| CBS News/YouGov | May 31 – June 3, 2016 | Bernie Sanders | 55% | Donald Trump | 32% | 23 | 1,187 | ± 3.9% |
| USC/Los Angeles Times | May 19–31, 2016 | Hillary Clinton | 56% | Donald Trump | 30% | 26 | 1,500 | ± 2.9% |
| NBC News/Wall Street Journal/Marist College | May 29–31, 2016 | Hillary Clinton | 55% | Donald Trump | 31% | 24 | 1,833 | ± 2.3% |
| NBC News/Wall Street Journal/Marist College | May 29–31, 2016 | Bernie Sanders | 62% | Donald Trump | 28% | 34 | 1,833 | ± 2.3% |
| Field Research | May 26–31, 2016 | Hillary Clinton | 53% | Donald Trump | 34% | 19 | 1,002 | ± 3.2% |
| Field Research | May 26–31, 2016 | Bernie Sanders | 60% | Donald Trump | 31% | 29 | 1,002 | ± 3.2% |
| SurveyUSA/KABC/SCNG | May 19–22, 2016 | Hillary Clinton | 52% | Donald Trump | 38% | 14 | 1,383 | ± 2.7% |
| Public Policy Institute of California | May 13–22, 2016 | Hillary Clinton | 49% | Donald Trump | 39% | 10 | 1,704 | ± 4.3% |
| Public Policy Institute of California | May 13–22, 2016 | Bernie Sanders | 53% | Donald Trump | 36% | 17 | 1,704 | ± 4.3% |
| SurveyUSA/KABC/SCNG | April 27–30, 2016 | Hillary Clinton | 56% | Donald Trump | 34% | 22 | 1,683 | ± 2.4% |
| SurveyUSA/KABC/SCNG | April 27–30, 2016 | Hillary Clinton | 57% | Ted Cruz | 29% | 28 | 1,683 | ± 2.4% |
| SurveyUSA/KABC/SCNG | April 27–30, 2016 | Hillary Clinton | 53% | John Kasich | 34% | 19 | 1,683 | ± 2.4% |
| SurveyUSA | March 30 – April 3, 2016 | Hillary Clinton | 60% | Donald Trump | 26% | 34 | 1,507 | ± 2.6% |
| SurveyUSA | March 30 – April 3, 2016 | Hillary Clinton | 57% | Ted Cruz | 32% | 25 | 1,507 | ± 2.6% |
| SurveyUSA | March 30 – April 3, 2016 | Hillary Clinton | 56% | John Kasich | 33% | 23 | 1,507 | ± 2.6% |
| SurveyUSA | March 30 – April 3, 2016 | Bernie Sanders | 63% | Donald Trump | 24% | 39 | 1,507 | ± 2.6% |
| SurveyUSA | March 30 – April 3, 2016 | Bernie Sanders | 61% | Ted Cruz | 26% | 35 | 1,507 | ± 2.6% |
| SurveyUSA | March 30 – April 3, 2016 | Bernie Sanders | 57% | John Kasich | 28% | 29 | 1,507 | ± 2.6% |
| Field Research | March 24 – April 4, 2016 | Hillary Clinton | 59% | Donald Trump | 31% | 28 | 1,400 | ± 3.2% |
| Field Research | March 24 – April 4, 2016 | Hillary Clinton | 55% | Ted Cruz | 32% | 23 | 1,400 | ± 3.2% |
| USC Dornsife College/LA Times | March 16–23, 2016 | Hillary Clinton | 59% | Donald Trump | 28% | 31 | 1,503 | ± % |
| USC Dornsife College/LA Times | March 16–23, 2016 | Hillary Clinton | 59% | Ted Cruz | 31% | 28 | 1,503 | ± % |
| USC Dornsife College/LA Times | March 16–23, 2016 | Hillary Clinton | 54% | John Kasich | 35% | 19 | 1,503 | ± % |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Field Research | June 8 – July 2, 2016 | Hillary Clinton | 50% | Donald Trump | 26% | Gary Johnson | 10% | 24 | 495 | ± 4.4% |
| Hoover Institution/YouGov | May 4–16, 2016 | Hillary Clinton | 45% | Donald Trump | 33% | Gary Johnson | 4% | 12 | 1,196 | ± 3.97% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Public Policy Institute of California | July 10–19, 2016 | Hillary Clinton | 46% | Donald Trump | 30% | Gary Johnson | 7% | Jill Stein | 6% | 16 | 1,703 | ± 3.5% |
| SurveyMonkey/USC/Los Angeles Times | June 7–10, 2016 | Hillary Clinton | 51% | Donald Trump | 27% | Gary Johnson | 7% | Jill Stein | 6% | 24 | 1,553 | ± 3% |

## Colorado

9 electoral votes (Democratic in 2008) 54%–45% (Democratic in 2012) 51%–46%
Two-way race
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | August 9–16, 2016 | Hillary Clinton | 49% | Donald Trump | 39% | 10 | 830 | ± 3.4% |
| NBC News/Wall Street Journal/Marist | August 4–10, 2016 | Hillary Clinton | 46% | Donald Trump | 32% | 14 | 899 | ± 3.3% |
| Fox News | July 9–12, 2016 | Hillary Clinton | 44% | Donald Trump | 34% | 10 | 600 | ± 4% |
| NBC News/Wall Street Journal/Marist | July 5–11, 2016 | Hillary Clinton | 43% | Donald Trump | 35% | 8 | 794 | ± 3.5% |
| Harper | July 7–9, 2016 | Hillary Clinton | 45% | Donald Trump | 38% | 7 | 500 | ± 4.38% |
| Gravis Marketing | July 7–8, 2016 | Hillary Clinton | 43% | Donald Trump | 41% | 2 | 1,313 | ± 2.7% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Magellan Strategies | August 29–31, 2016 | Hillary Clinton | 41% | Donald Trump | 36% | Gary Johnson | 13% | Jill Stein | 3% | 5 | 500 | ± 4.38% |
| Quinnipiac University | August 9–16, 2016 | Hillary Clinton | 41% | Donald Trump | 33% | Gary Johnson | 16% | Jill Stein | 7% | 8 | 830 | ± 3.4% |
| NBC News/Wall Street Journal/Marist | August 4–10, 2016 | Hillary Clinton | 41% | Donald Trump | 29% | Gary Johnson | 15% | Jill Stein | 6% | 12 | 899 | ± 3.3% |
| Fox News | July 9–12, 2016 | Hillary Clinton | 37% | Donald Trump | 28% | Gary Johnson | 13% | Jill Stein | 6% | 9 | 600 | ± 4% |
| Monmouth University | July 7–12, 2016 | Hillary Clinton | 48% | Donald Trump | 35% | Gary Johnson | 5% | Jill Stein | 3% | 13 | 404 | ± 4.9% |
| NBC News/Wall Street Journal/Marist | July 5–11, 2016 | Hillary Clinton | 39% | Donald Trump | 33% | Gary Johnson | 13% | Jill Stein | 4% | 6 | 794 | ± 3.5% |
| Gravis Marketing | July 7–8, 2016 | Hillary Clinton | 39% | Donald Trump | 38% | Gary Johnson | 9% | Jill Stein | 4% | 1 | 1,313 | ± 2.7% |
| CBS News/YouGov | June 21–24, 2016 | Hillary Clinton | 40% | Donald Trump | 39% | Gary Johnson | 4% | Jill Stein | 1% | 1 | 996 | ± 4.3% |

## Connecticut

7 electoral votes (Democratic in 2008) 61%–38% (Democratic in 2012) 58%–41%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | June 1–5, 2016 | Hillary Clinton | 45% | Donald Trump | 38% | 7 | 1,330 | ± 2.7% |
| Quinnipiac University | June 1–5, 2016 | Bernie Sanders | 54% | Donald Trump | 35% | 19 | 1,330 | ± 2.7% |
| Emerson College | April 10–11, 2016 | Hillary Clinton | 48% | Donald Trump | 40% | 8 | 1,043 | ± 3% |
| Emerson College | April 10–11, 2016 | Hillary Clinton | 52% | Ted Cruz | 31% | 21 | 1,043 | ± 3% |
| Emerson College | April 10–11, 2016 | Hillary Clinton | 38% | John Kasich | 49% | 11 | 1,043 | ± 3% |
| Emerson College | April 10–11, 2016 | Bernie Sanders | 49% | Donald Trump | 40% | 9 | 1,043 | ± 3% |
| Emerson College | April 10–11, 2016 | Bernie Sanders | 55% | Ted Cruz | 30% | 25 | 1,043 | ± 3% |
| Emerson College | April 10–11, 2016 | Bernie Sanders | 40% | John Kasich | 48% | 8 | 1,043 | ± 3% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | June 1–5, 2016 | Hillary Clinton | 41% | Donald Trump | 36% | Gary Johnson | 6% | Jill Stein | 3% | 5 | 1,330 | ± 2.7% |

## Delaware

3 electoral votes (Democratic in 2008) 62%–37% (Democratic in 2012) 59%–40%
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| Fairleigh Dickinson University | July 20–24, 2016 | Hillary Clinton | 42% | Donald Trump | 32% | Gary Johnson | 9% | 10 | 715 | ± 4.1% |

## District of Columbia

3 electoral votes (Democratic in 2008) 92%–7% (Democratic in 2012) 91%–7%
No polling was conducted in 2016

## Florida

29 electoral votes (Democratic in 2008) 51%–48% (Democratic in 2012) 50%–49%

## Georgia

16 electoral votes (Republican in 2008) 52%–47% (Republican in 2012) 53%–45%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Atlanta Journal-Constitution | August 1–4, 2016 | Hillary Clinton | 44% | Donald Trump | 40% | 4 | 847 | ± 4.0% |
| Public Policy Polling | May 27–30, 2016 | Hillary Clinton | 40% | Donald Trump | 49% | 9 | 724 | ± 3.6% |
| Public Policy Polling | May 27–30, 2016 | Bernie Sanders | 40% | Donald Trump | 48% | 8 | 724 | ± 3.6% |
| Fox 5/Opinion Savvy | May 15, 2016 | Hillary Clinton | 41% | Donald Trump | 44% | 3 | 587 | ± 4.0% |
| Atlanta Journal-Constitution | May 9–12, 2016 | Hillary Clinton | 41% | Donald Trump | 45% | 4 | 822 | ± 4.26% |
| Atlanta Journal-Constitution | May 9–12, 2016 | Bernie Sanders | 47% | Donald Trump | 42% | 5 | 822 | ± 4.26% |
| Landmark/RosettaStone | May 5, 2016 | Hillary Clinton | 41% | Donald Trump | 42% | 1 | 570 | ± 4.1% |
| Lake Research Partners | March 31 – April 3, 2016 | Hillary Clinton | 50% | Donald Trump | 37% | 13 | 400 | ± 4.9% |
| Lake Research Partners | March 31 – April 3, 2016 | Hillary Clinton | 47% | Ted Cruz | 40% | 7 | 400 | ± 4.9% |
| SurveyUSA | February 22–23, 2016 | Hillary Clinton | 41% | Donald Trump | 50% | 9 | 1,261 | ± 2.8% |
| SurveyUSA | February 22–23, 2016 | Hillary Clinton | 43% | Marco Rubio | 50% | 7 | 1,261 | ± 2.8% |
| SurveyUSA | February 22–23, 2016 | Hillary Clinton | 42% | Ted Cruz | 49% | 7 | 1,261 | ± 2.8% |
| SurveyUSA | February 22–23, 2016 | Bernie Sanders | 41% | Donald Trump | 49% | 8 | 1,261 | ± 2.8% |
| SurveyUSA | February 22–23, 2016 | Bernie Sanders | 41% | Marco Rubio | 49% | 8 | 1,261 | ± 2.8% |
| SurveyUSA | February 22–23, 2016 | Bernie Sanders | 42% | Ted Cruz | 48% | 6 | 1,261 | ± 2.8% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| Opinion Savvy/Fox 5 Atlanta | August 17, 2016 | Hillary Clinton | 43% | Donald Trump | 43% | Gary Johnson | 11% | Tied | 730 | ± 3.6% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| CBS News/YouGov | August 10–12, 2016 | Hillary Clinton | 41% | Donald Trump | 45% | Gary Johnson | 5% | Jill Stein | 1% | 4 | 988 | ± 4.3% |
| JMC Analytics | August 6–7, 2016 | Hillary Clinton | 44% | Donald Trump | 37% | Gary Johnson | 7% | Jill Stein | 1% | 7 | 615 | ± 4.0% |
| Atlanta Journal-Constitution | August 1–4, 2016 | Hillary Clinton | 41% | Donald Trump | 38% | Gary Johnson | 11% | Jill Stein | 2% | 3 | 847 | ± 4.0% |
| Landmark/RosettaStone | August 1, 2016 | Hillary Clinton | 46% | Donald Trump | 46% | Gary Johnson | 4% | Jill Stein | 1% | Tied | 787 | ± 3.5% |
| SurveyUSA | July 29–31, 2016 | Hillary Clinton | 42% | Donald Trump | 46% | Gary Johnson | 5% | Jill Stein | 2% | 4 | 628 | ± 4% |
| Landmark/RosettaStone | July 24, 2016 | Hillary Clinton | 44% | Donald Trump | 46% | Gary Johnson | 5% | Jill Stein | 3% | 2 | 500 | ± 4.4% |
| Public Policy Polling | May 27–30, 2016 | Hillary Clinton | 38% | Donald Trump | 45% | Gary Johnson | 6% | Jill Stein | 2% | 7 | 724 | ± 3.6% |
| Public Policy Polling | May 27–30, 2016 | Bernie Sanders | 36% | Donald Trump | 46% | Gary Johnson | 5% | Jill Stein | 1% | 10 | 724 | ± 3.6% |

## Idaho

4 electoral votes (Republican in 2008) 61%–36% (Republican in 2012) 64%–32%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Dan Jones & Associates | May 18 – June 4, 2016 | Hillary Clinton | 32% | Donald Trump | 49% | 17 | 603 | ± 3.99% |
| Dan Jones & Associates | May 18 – June 4, 2016 | Bernie Sanders | 43% | Donald Trump | 46% | 3 | 603 | ± 3.99% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green Party | % | Lead margin | Sample size | Margin of error |
| Dan Jones & Associates | August 18–31, 2016 | Hillary Clinton | 23% | Donald Trump | 44% | Gary Johnson | 13% | Jill Stein | 2% | 21 | 602 | ± 4.0% |
| Dan Jones & Associates | July 5–16, 2016 | Hillary Clinton | 23% | Donald Trump | 44% | Gary Johnson | 5% | Jill Stein | 3% | 21 | 601 | ± 4.0% |

## Illinois

20 electoral votes (Democratic in 2008) 62%–37% (Democratic in 2012) 58%–41%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Normington, Petts and Associates | August 1–4, 2016 | Hillary Clinton | 51% | Donald Trump | 32% | 19 | 800 | ± 3.5% |
| NBC News/WSJ/Marist | March 4–10, 2016 | Hillary Clinton | 57% | Donald Trump | 32% | 25 | 1,968 | ± 2.2% |
| NBC News/WSJ/Marist | March 4–10, 2016 | Hillary Clinton | 51% | Ted Cruz | 40% | 11 | 1,968 | ± 2.2% |
| NBC News/WSJ/Marist | March 4–10, 2016 | Bernie Sanders | 60% | Donald Trump | 30% | 30 | 1,968 | ± 2.2% |
| NBC News/WSJ/Marist | March 4–10, 2016 | Bernie Sanders | 55% | Ted Cruz | 35% | 20 | 1,968 | ± 2.2% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| The Illinois Observer | June 7, 2016 | Hillary Clinton | 48% | Donald Trump | 30% | Gary Johnson | 6% | 18 | 732 | ? |
| Capitol Fax/We Ask America | June 5–6, 2016 | Hillary Clinton | 47% | Donald Trump | 35% | Gary Johnson | 7% | 12 | 1,231 RV | ± 3% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green Party | % | Lead margin | Sample size | Margin of error |
| Victory Research | July 14–16, 2016 | Hillary Clinton | 51% | Donald Trump | 34% | Gary Johnson | 7% | Jill Stein | 7% | 17 | 1,200 | ± 2.83% |
| Basswood Research | July 11–12, 2016 | Hillary Clinton | 46% | Donald Trump | 33% | Gary Johnson | 5% | Jill Stein | 3% | 13 | 800 | ± 3.5% |

## Indiana

11 electoral votes (Democratic in 2008) 50%–49% (Republican in 2012) 54%–44%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Tarrance Group | July 20–21, 2016 | Hillary Clinton | 36% | Donald Trump | 50% | 14 | 503 | ± 4.4% |
| Bellwether | May 11–15, 2016 | Hillary Clinton | 31% | Donald Trump | 40% | 9 | 600 | ± 4.0% |
| NBC News/Wall Street Journal/Marist | April 26–28, 2016 | Hillary Clinton | 41% | Donald Trump | 48% | 7 | 2,149 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | April 26–28, 2016 | Hillary Clinton | 43% | Ted Cruz | 50% | 7 | 2,149 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | April 26–28, 2016 | Hillary Clinton | 37% | John Kasich | 56% | 19 | 2,149 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | April 26–28, 2016 | Bernie Sanders | 46% | Donald Trump | 47% | 1 | 2,149 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | April 26–28, 2016 | Bernie Sanders | 48% | Ted Cruz | 45% | 3 | 2,149 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | April 26–28, 2016 | Bernie Sanders | 46% | John Kasich | 47% | 1 | 2,149 | ± 2.1% |
| POS /Howey Politics Indiana/WTHR Channel 13 | April 18–21, 2016 | Hillary Clinton | 39% | Donald Trump | 47% | 8 | 500 | ± 4.0% |
| POS /Howey Politics Indiana/WTHR Channel 13 | April 18–21, 2016 | Hillary Clinton | 36% | Ted Cruz | 53% | 17 | 500 | ± 4.0% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Monmouth University | August 13–16, 2016 | Hillary Clinton | 36% | Donald Trump | 47% | Gary Johnson | 10% | 11 | 403 | ± 4.9% |

## Iowa

6 electoral votes (Democratic in 2008) 54%–44% (Democratic in 2012) 52%–46%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 30–31, 2016 | Hillary Clinton | 45% | Donald Trump | 43% | 2 | 827 | ± 3.4% |
| Quinnipiac University | August 9–16, 2016 | Hillary Clinton | 47% | Donald Trump | 44% | 3 | 846 | ± 3.4% |
| Suffolk University | August 8–10, 2016 | Hillary Clinton | 40% | Donald Trump | 41% | 1 | 500 | ± 4.4% |
| NBC News/Wall Street Journal/Marist | August 3–7, 2016 | Hillary Clinton | 41% | Donald Trump | 37% | 4 | 899 | ± 3.1% |
| NBC News/Wall Street Journal/Marist | July 5–10, 2016 | Hillary Clinton | 42% | Donald Trump | 39% | 3 | 822 | ± 3.4% |
| Gravis Marketing | July 7–8, 2016 | Hillary Clinton | 42% | Donald Trump | 40% | 2 | 1,318 | ± 2.7% |
| Loras College | June 24–28, 2016 | Hillary Clinton | 48% | Donald Trump | 34% | 14 | 600 | ± 4% |
| Public Policy Polling | June 22–23, 2016 | Hillary Clinton | 41% | Donald Trump | 39% | 2 | 897 | ± 3.3% |
| Public Policy Polling | June 9–10, 2016 | Hillary Clinton | 44% | Donald Trump | 41% | 3 | 630 | ± 3.9% |
| Public Policy Polling | January 8–10, 2016 | Hillary Clinton | 40% | Jeb Bush | 43% | 3 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Hillary Clinton | 42% | Ben Carson | 46% | 4 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Hillary Clinton | 42% | Ted Cruz | 45% | 3 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Hillary Clinton | 41% | Marco Rubio | 46% | 5 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Hillary Clinton | 42% | Donald Trump | 42% | Tied | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Bernie Sanders | 47% | Jeb Bush | 39% | 8 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Bernie Sanders | 44% | Ben Carson | 40% | 4 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Bernie Sanders | 45% | Ted Cruz | 42% | 3 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Bernie Sanders | 43% | Marco Rubio | 42% | 1 | 1,901 | ± 2.3% |
| Public Policy Polling | January 8–10, 2016 | Bernie Sanders | 47% | Donald Trump | 42% | 5 | 1,901 | ± 2.3% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Hillary Clinton | 48% | Donald Trump | 40% | 8 | 1,470 | ± 2.6% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Hillary Clinton | 43% | Ted Cruz | 47% | 4 | 1,470 | ± 2.6% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Hillary Clinton | 42% | Marco Rubio | 47% | 5 | 1,470 | ± 2.6% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Bernie Sanders | 51% | Donald Trump | 38% | 13 | 1,470 | ± 2.6% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Bernie Sanders | 47% | Ted Cruz | 42% | 5 | 1,470 | ± 2.6% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Bernie Sanders | 44% | Marco Rubio | 44% | Tied | 1,470 | ± 2.6% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Emerson College | August 31 – September 1, 2016 | Hillary Clinton | 39% | Donald Trump | 44% | Gary Johnson | 8% | Jill Stein | 1% | 5 | 600 | ± 3.9% |
| CBS News/YouGov | August 17–19, 2016 | Hillary Clinton | 40% | Donald Trump | 40% | Gary Johnson | 7% | Jill Stein | 2% | Tied | 987 | ± 4% |
| Quinnipiac University | August 9–16, 2016 | Hillary Clinton | 41% | Donald Trump | 39% | Gary Johnson | 12% | Jill Stein | 3% | 2 | 846 | ± 3.4% |
| Suffolk University | August 8–10, 2016 | Hillary Clinton | 36% | Donald Trump | 37% | Gary Johnson | 6% | Jill Stein | 3% | 1 | 500 | ± 4.4% |
| NBC News/Wall Street Journal/Marist | August 3–7, 2016 | Hillary Clinton | 35% | Donald Trump | 35% | Gary Johnson | 12% | Jill Stein | 6% | Tied | 899 | ± 3.1% |
| CBS News/YouGov | July 13–15, 2016 | Hillary Clinton | 39% | Donald Trump | 40% | Gary Johnson | 3% | Jill Stein | 2% | 1 | 998 | ± 4.8% |
| Monmouth University | July 8–11, 2016 | Hillary Clinton | 42% | Donald Trump | 44% | Gary Johnson | 6% | Jill Stein | 1% | 2 | 401 | ± 4.9% |
| NBC News/Wall Street Journal/Marist | July 5–10, 2016 | Hillary Clinton | 37% | Donald Trump | 37% | Gary Johnson | 7% | Jill Stein | 4% | Tied | 822 | ± 3.4% |
| Gravis Marketing | July 7–8, 2016 | Hillary Clinton | 39% | Donald Trump | 37% | Gary Johnson | 8% | Jill Stein | 2% | 2 | 1,318 | ± 2.7% |
| Loras College | June 24–28, 2016 | Hillary Clinton | 44% | Donald Trump | 31% | Gary Johnson | 6% | Jill Stein | 2% | 13 | 600 | ± 4.0% |

## Kansas

6 electoral votes (Republican in 2008) 56%–42% (Republican in 2012) 60%–38%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| John Zogby Strategies | June 4–6, 2016 | Hillary Clinton | 43% | Donald Trump | 36% | 7 | 433 | ± 4.7% |
| Fort Hays State University | February 19–26, 2016 | Hillary Clinton | 36% | Donald Trump | 46% | 10 | 440 | ± 5.0% |
| Fort Hays State University | February 19–26, 2016 | Hillary Clinton | 35% | Ted Cruz | 49% | 14 | 440 | ± 5.0% |
| Fort Hays State University | February 19–26, 2016 | Hillary Clinton | 32% | Marco Rubio | 51% | 19 | 440 | ± 5.0% |
| Fort Hays State University | February 19–26, 2016 | Bernie Sanders | 43% | Donald Trump | 42% | 1 | 440 | ± 5.0% |
| Fort Hays State University | February 19–26, 2016 | Bernie Sanders | 38% | Ted Cruz | 44% | 6 | 440 | ± 5.0% |
| Fort Hays State University | February 19–26, 2016 | Bernie Sanders | 36% | Marco Rubio | 46% | 10 | 440 | ± 5.0% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| SurveyUSA/KSN News | August 9, 2016 | Hillary Clinton | 39% | Donald Trump | 44% | Gary Johnson | 8% | 5 | 566 | ±4.2% |
| Fort Hays State University | July 11–21, 2016 | Hillary Clinton | 27% | Donald Trump | 44% | Gary Johnson | 7% | 17 | 542 | ±4.4% |
| SurveyUSA/KSN News | July 8–11, 2016 | Hillary Clinton | 36% | Donald Trump | 47% | Gary Johnson | 8% | 11 | 559 | ± 4.2% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Remington Research Group | August 22–23, 2016 | Hillary Clinton | 37% | Donald Trump | 44% | Gary Johnson | 8% | Jill Stein | 2% | 7 | 7,769 | ± 1.5% |

## Kentucky

8 electoral votes (Republican in 2008) 57%–41% (Republican in 2012) 60%–38%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Bellwether | August 2–4, 2016 | Hillary Clinton | 25% | Donald Trump | 41% | 16 | 508 | ± 4.0% |
| Bellwether | July 5–7, 2016 | Hillary Clinton | 28% | Donald Trump | 34% | 6 | 776 | ± 3% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| RunSwitch PR/Harper | July 31 – August 1, 2016 | Hillary Clinton | 36% | Donald Trump | 49% | Gary Johnson | 5% | Jill Stein | 2% | 13 | 500 | ± 4.4% |

## Louisiana

8 electoral votes (Republican in 2008) 59%–40% (Republican in 2012) 58%–41%
Two-way race
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| JMC Analytics and Polling | May 5–6, 2016 | Hillary Clinton | 36% | Donald Trump | 52% | 16 | 624 | ± 3.9% |
| JMC Analytics and Polling | May 5–6, 2016 | Bernie Sanders | 32% | Donald Trump | 55% | 23 | 624 | ± 3.9% |

## Maine

4 electoral votes (Statewide vote worth 2 EVs; 1st and 2nd congressional districts worth 1 EV each) (Democratic in 2008) 58%–40% (Democratic in 2012) 56%–41%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Univ. of N.H./PPH/Maine Sunday Telegram | June 15–21, 2016 | Hillary Clinton | 42% | Donald Trump | 35% | 7 | 475 | ± 4.5% |
| Bangor Daily News | March 3–4, 2016 | Hillary Clinton | 43% | Donald Trump | 34% | 9 | 610 RV | ± 3% |
| Bangor Daily News | March 3–4, 2016 | Bernie Sanders | 57% | Donald Trump | 31% | 26 | 610 RV | ± 3% |

## Maryland

10 electoral votes (Democratic in 2008) 62%–36% (Democratic in 2012) 62%–36%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | April 15–17, 2016 | Hillary Clinton | 61% | Donald Trump | 28% | 33 | 879 | ± 3.3% |
| Public Policy Polling | April 15–17, 2016 | Hillary Clinton | 58% | Ted Cruz | 24% | 34 | 879 | ± 3.3% |
| Public Policy Polling | April 15–17, 2016 | Hillary Clinton | 54% | John Kasich | 33% | 21 | 879 | ± 3.3% |
| Public Policy Polling | April 15–17, 2016 | Bernie Sanders | 60% | Donald Trump | 29% | 31 | 879 | ± 3.3% |
| Public Policy Polling | April 15–17, 2016 | Bernie Sanders | 62% | Ted Cruz | 24% | 38 | 879 | ± 3.3% |
| Public Policy Polling | April 15–17, 2016 | Bernie Sanders | 52% | John Kasich | 32% | 20 | 879 | ± 3.3% |
| NBC4/Marist | April 5–9, 2016 | Hillary Clinton | 63% | Donald Trump | 27% | 36 | 2,563 | ± 1.9% |
| NBC4/Marist | April 5–9, 2016 | Hillary Clinton | 60% | Ted Cruz | 31% | 29 | 2,563 | ± 1.9% |
| NBC4/Marist | April 5–9, 2016 | Hillary Clinton | 55% | John Kasich | 38% | 17 | 2,563 | ± 1.9% |
| NBC4/Marist | April 5–9, 2016 | Bernie Sanders | 65% | Donald Trump | 26% | 39 | 2,563 | ± 1.9% |
| NBC4/Marist | April 5–9, 2016 | Bernie Sanders | 63% | Ted Cruz | 28% | 35 | 2,563 | ± 1.9% |
| NBC4/Marist | April 5–9, 2016 | Bernie Sanders | 55% | John Kasich | 36% | 19 | 2,563 | ± 1.9% |
| Washington Post/University of Maryland | March 30 – April 4, 2016 | Hillary Clinton | 63% | Donald Trump | 28% | 35 | 1,503 | ± N/A% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| OpinionWorks | August 18–30, 2016 | Hillary Clinton | 54% | Donald Trump | 25% | Gary Johnson | 6% | Jill Stein | 2% | 29 | 754 | ± 3.6% |

## Massachusetts

11 electoral votes (Democratic in 2008) 62%–36% (Democratic in 2012) 61%–38%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Boston Globe/Suffolk University | May 2–5, 2016 | Hillary Clinton | 55% | Donald Trump | 31% | 24 | 500 | ± 4.4% |
| Western New England University | April 1–10, 2016 | Hillary Clinton | 62% | Donald Trump | 26% | 36 | 497 | ± 4.0% |
| Western New England University | April 1–10, 2016 | Hillary Clinton | 63% | Ted Cruz | 30% | 33 | 497 | ± 4.0% |
| Western New England University | April 1–10, 2016 | Bernie Sanders | 70% | Donald Trump | 23% | 47 | 497 | ± 4.0% |
| Western New England University | April 1–10, 2016 | Bernie Sanders | 71% | Ted Cruz | 24% | 47 | 497 | ± 4.0% |

## Michigan

16 electoral votes (Democratic in 2008) 57%–41% (Democratic in 2012) 54%–45%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Fox 2 Detroit/Mitchell Poll | August 9–10, 2016 | Hillary Clinton | 49% | Donald Trump | 39% | 10 | 1,314 | ± 2.7% |
| EPIC-MRA | July 30 – August 4, 2016 | Hillary Clinton | 46% | Donald Trump | 36% | 10 | 600 | ± 4% |
| Mitchell Research | July 5–11, 2016 | Hillary Clinton | 40% | Donald Trump | 34% | 6 | 600 | ± 4.0% |
| Gravis Marketing | July 7–8, 2016 | Hillary Clinton | 48% | Donald Trump | 41% | 7 | 1,562 | ± 2.4% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 50% | Donald Trump | 39% | 11 | 300 | ± 5.66% |
| Detroit News/WDIV-TV | May 24–26, 2016 | Hillary Clinton | 43% | Donald Trump | 39% | 4 | 600 | ± 4% |
| Detroit News/WDIV-TV | May 24–26, 2016 | Bernie Sanders | 52% | Donald Trump | 33% | 19 | 600 | ± 4% |
| SurveyUSA | March 23–24, 2016 | Hillary Clinton | 49% | Donald Trump | 38% | 11 | 904 | ± 3.3% |
| SurveyUSA | March 23–24, 2016 | Hillary Clinton | 49% | Ted Cruz | 39% | 10 | 904 | ± 3.3% |
| SurveyUSA | March 23–24, 2016 | Hillary Clinton | 41% | John Kasich | 46% | 5 | 904 | ± 3.3% |
| SurveyUSA | March 23–24, 2016 | Bernie Sanders | 55% | Donald Trump | 36% | 19 | 904 | ± 3.3% |
| SurveyUSA | March 23–24, 2016 | Bernie Sanders | 56% | Ted Cruz | 35% | 21 | 904 | ± 3.3% |
| SurveyUSA | March 23–24, 2016 | Bernie Sanders | 47% | John Kasich | 42% | 5 | 904 | ± 3.3% |
| SurveyUSA | March 23–24, 2016 | Hillary Clinton | 48% | Mitt Romney | 35% | 13 | 904 | ± 3.3% |
| SurveyUSA | March 23–24, 2016 | Hillary Clinton | 48% | Paul Ryan | 38% | 10 | 904 | ± 3.3% |
| EPIC-MRA | March 19–22, 2016 | Hillary Clinton | 47% | Donald Trump | 37% | 10 | 600 | ± 4% |
| NBC News/Wall Street Journal/Marist | March 1–3, 2016 | Hillary Clinton | 52% | Donald Trump | 36% | 16 | 2,229 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | March 1–3, 2016 | Hillary Clinton | 48% | Ted Cruz | 41% | 7 | 2,229 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | March 1–3, 2016 | Bernie Sanders | 56% | Donald Trump | 34% | 22 | 2,229 | ± 2.1% |
| NBC News/Wall Street Journal/Marist | March 1–3, 2016 | Bernie Sanders | 54% | Ted Cruz | 36% | 18 | 2,229 | ± 2.1% |
| Marketing Resource Group | February 22–27, 2016 | Hillary Clinton | 44% | Donald Trump | 39% | 5 | 600 | ± 4% |
| Marketing Resource Group | February 22–27, 2016 | Hillary Clinton | 44% | Ted Cruz | 39% | 5 | 600 | ± 4% |
| Marketing Resource Group | February 22–27, 2016 | Hillary Clinton | 41% | Marco Rubio | 43% | 2% | 600 | ± 4% |
| EPIC-MRA | January 23–26, 2016 | Hillary Clinton | 43% | Donald Trump | 41% | 2 | 600 | ± 4% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 48% | Donald Trump | 33% | Gary Johnson | 12% | 15 | 300 | ± 5.66% |
| Detroit News/WDIV-TV | May 24–26, 2016 | Hillary Clinton | 37% | Donald Trump | 33% | Gary Johnson | 12% | 4 | 600 | ± 4% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Emerson College | August 25–28, 2016 | Hillary Clinton | 45% | Donald Trump | 40% | Gary Johnson | 7% | Jill Stein | 3% | 5 | 800 | ± 3.4% |
| Suffolk University | August 22–24, 2016 | Hillary Clinton | 44% | Donald Trump | 37% | Gary Johnson | 5% | Jill Stein | 3% | 7 | 500 | ± 4.4% |
| Fox 2 Detroit/Mitchell Poll | August 9–10, 2016 | Hillary Clinton | 44% | Donald Trump | 33% | Gary Johnson | 9% | Jill Stein | 5% | 11 | 1,314 | ± 2.7% |
| EPIC-MRA | July 30 – August 4, 2016 | Hillary Clinton | 43% | Donald Trump | 32% | Gary Johnson | 8% | Jill Stein | 3% | 11 | 600 | ± 4% |
| The Detroit News/WDIV-TV | July 30 – August 1, 2016 | Hillary Clinton | 41% | Donald Trump | 32% | Gary Johnson | 8% | Jill Stein | 3% | 9 | 600 | ± 4.0% |
| CBS News/YouGov | July 13–15, 2016 | Hillary Clinton | 42% | Donald Trump | 39% | Gary Johnson | 5% | Jill Stein | 2% | 3 | 1,201 | ± 4.1% |
| Marketing Resource Group | July 11–15, 2016 | Hillary Clinton | 34% | Donald Trump | 29% | Gary Johnson | 3% | Jill Stein | 2% | 5 | 800 | ± 3.46% |
| Gravis Marketing | July 7–8, 2016 | Hillary Clinton | 37% | Donald Trump | 34% | Gary Johnson | 2% | Jill Stein | 1% | 3 | 1,562 | ± 2.4% |

## Minnesota

10 electoral votes (Democratic in 2008) 54%–44% (Democratic in 2012) 53%–45%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Star Tribune | April 25–27, 2016 | Hillary Clinton | 48% | Donald Trump | 35% | 13 | 800 | ± 3.5% |
| Star Tribune | April 25–27, 2016 | Hillary Clinton | 49% | Ted Cruz | 40% | 9 | 800 | ± 3.5% |
| Star Tribune | April 25–27, 2016 | Bernie Sanders | 53% | Donald Trump | 38% | 15 | 800 | ± 3.5% |
| Star Tribune | April 25–27, 2016 | Bernie Sanders | 50% | Ted Cruz | 36% | 14 | 800 | ± 3.5% |
| Star Tribune/Mason-Dixon | January 18–20, 2016 | Hillary Clinton | 43% | Donald Trump | 38% | 5 | 800 | ± 3.5% |
| Star Tribune/Mason-Dixon | January 18–20, 2016 | Hillary Clinton | 43% | Ted Cruz | 45% | 2 | 800 | ± 3.5% |
| Star Tribune/Mason-Dixon | January 18–20, 2016 | Hillary Clinton | 40% | Marco Rubio | 49% | 9 | 800 | ± 3.5% |
| Star Tribune/Mason-Dixon | January 18–20, 2016 | Bernie Sanders | 53% | Donald Trump | 37% | 16 | 800 | ± 3.5% |

## Missouri

10 electoral votes (Republican in 2008) 49.4%–49.2% (Republican in 2012) 53%–44%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 26–27, 2016 | Hillary Clinton | 41% | Donald Trump | 47% | 6 | 1,055 | ± 3.0% |
| Public Policy Polling | August 8–9, 2016 | Hillary Clinton | 42% | Donald Trump | 45% | 3 | 947 | ± 3.2% |
| Public Policy Polling | July 11–12, 2016 | Hillary Clinton | 40% | Donald Trump | 50% | 10 | 959 | ± 3.2% |
| Missouri Scout | May 20–21, 2016 | Hillary Clinton | 40% | Donald Trump | 46% | 6 | 1301 | ± 2.8% |
| DFM Research | March 17–24, 2016 | Hillary Clinton | 42% | Donald Trump | 40% | 2 | 674 | ± 3.8% |
| Fort Hayes State University | March 3–10, 2016 | Bernie Sanders | 37% | Marco Rubio | 43% | 6 | 475 | ± 4.6% |
| Fort Hayes State University | March 3–10, 2016 | Hillary Clinton | 31% | Marco Rubio | 49% | 18 | 475 | ± 4.6% |
| Fort Hayes State University | March 3–10, 2016 | Bernie Sanders | 36% | Ted Cruz | 45% | 9 | 475 | ± 4.6% |
| Fort Hayes State University | March 3–10, 2016 | Hillary Clinton | 34% | Ted Cruz | 51% | 17 | 475 | ± 4.6% |
| Fort Hayes State University | March 3–10, 2016 | Bernie Sanders | 43% | Donald Trump | 40% | 3 | 475 | ± 4.6% |
| Fort Hayes State University | March 3–10, 2016 | Hillary Clinton | 38% | Donald Trump | 43% | 5 | 475 | ± 4.6% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| Monmouth University | August 19–22, 2016 | Hillary Clinton | 43% | Donald Trump | 44% | Gary Johnson | 8% | 1 | 401 | ± 4.9% |
| SurveyUSA/KSDK | July 20–24, 2016 | Hillary Clinton | 37% | Donald Trump | 47% | Gary Johnson | 8% | 10 | 1,943 | ± 2.3% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Remington Research Group | August 5–6, 2016 | Hillary Clinton | 42% | Donald Trump | 44% | Gary Johnson | 5% | Jill Stein | 2% | 2 | 1,280 | ± 3% |
| St. Louis/Post-Dispatch | July 23–24, 2016 | Hillary Clinton | 41% | Donald Trump | 40% | Gary Johnson | 9% | Jill Stein | 1% | 1 | 625 | ± 4% |
| Public Policy Polling | July 11–12, 2016 | Hillary Clinton | 36% | Donald Trump | 46% | Gary Johnson | 7% | Jill Stein | 1% | 10 | 959 | ± 3.2% |

## Nevada

6 electoral votes (Democratic in 2008) 55%–43% (Democratic in 2012) 52%–46%
Two-way race
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 45% | Donald Trump | 47% | 2 | 300 | ± 5.66% |
| TargetPoint/Just Win Strategies | June 14–18, 2016 | Hillary Clinton | 46% | Donald Trump | 45% | 1 | 200 | ? |
| Gravis Marketing | May 24–25, 2016 | Hillary Clinton | 42% | Donald Trump | 47% | 5 | 1 637 | ± 2% |
Three-way
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| Suffolk | August 15–17, 2016 | Hillary Clinton | 44% | Donald Trump | 42% | Gary Johnson | 5% | 2 | 500 | ± 4.4% |
| KTNV/Rasmussen Reports | July 29–31, 2016 | Hillary Clinton | 41% | Donald Trump | 40% | Gary Johnson | 10% | 1 | 750 | ± 4% |
| KTNV/Rasmussen Reports | July 22–24, 2016 | Hillary Clinton | 38% | Donald Trump | 43% | Gary Johnson | 8% | 5 | 750 | ± 4% |
| Monmouth University | July 7–10, 2016 | Hillary Clinton | 45% | Donald Trump | 41% | Gary Johnson | 5% | 4 | 408 | ± 4.9% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 44% | Donald Trump | 44% | Gary Johnson | 9% | Tied | 300 | ± 5.66% |
| Gravis Marketing | May 24–25, 2016 | Hillary Clinton | 41% | Donald Trump | 44% | Gary Johnson | 8% | 3 | 1 637 | ± 2% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| CBS News/YouGov | August 2–5, 2016 | Hillary Clinton | 43% | Donald Trump | 41% | Gary Johnson | 4% | Jill Stein | 3% | 2 | 993 | ± 4.6% |
Five-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | IAPN | % | Unaffiliated | % | Lead margin | Sample size | Margin of error |
| Suffolk University | August 15–17, 2016 | Hillary Clinton | 43.8% | Donald Trump | 41.6% | Gary Johnson | 4.8% | Darrell Castle | 1% | Rocky De La Fuente | 1% | 2.2 | 500 | ± 4.4% |

## New Hampshire

4 electoral votes (Democratic in 2008) 54%–45% (Democratic in 2012) 52%–46%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 30–31, 2016 | Hillary Clinton | 46% | Donald Trump | 41% | 5 | 585 | ± 4.1% |
| Public Policy Polling | August 26–28, 2016 | Hillary Clinton | 46% | Donald Trump | 40% | 6 | 977 | ± 3.1% |
| WMUR/University of New Hampshire | August 20–28, 2016 | Hillary Clinton | 45% | Donald Trump | 36% | 9 | 433 | ± 4.7% |
| Public Policy Polling | August 5–7, 2016 | Hillary Clinton | 50% | Donald Trump | 37% | 13 | 802 | ± 3.5% |
| MassINC/WBUR | July 29 – August 1, 2016 | Hillary Clinton | 51% | Donald Trump | 34% | 17 | 609 | ± 4% |
| NH Journal | July 19–21, 2016 | Hillary Clinton | 39% | Donald Trump | 48% | 9 | 1,166 | ± 5.1% |
| WMUR/University of New Hampshire | July 9–18, 2016 | Hillary Clinton | 39% | Donald Trump | 37% | 2 | 469 | ± 4.5% |
| American Research Group | June 24–28, 2016 | Hillary Clinton | 47% | Donald Trump | 42% | 5 | 533 | ± 4.2% |
| Public Policy Polling | June 22–23, 2016 | Hillary Clinton | 43% | Donald Trump | 39% | 4 | 578 | ± 4.1% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 51% | Donald Trump | 47% | 4 | 300 | ± 5.66% |
| TargetPoint/Just Win Strategies | June 14–18, 2016 | Hillary Clinton | 44% | Donald Trump | 40% | 4 | 200 | ? |
| Boston Herald/Franklin Pierce University | May 25–28, 2016 | Hillary Clinton | 44% | Donald Trump | 44% | Tied | 405 | ± 4.9% |
| MassINC/WBUR | May 12–15, 2016 | Hillary Clinton | 44% | Donald Trump | 42% | 2 | 501 | ± 4.4% |
| MassINC/WBUR | May 12–15, 2016 | Bernie Sanders | 54% | Donald Trump | 38% | 16 | 501 | ± 4.4% |
| WMUR/University of New Hampshire | April 7–17, 2016 | Hillary Clinton | 50% | Donald Trump | 31% | 19 | 553 | ± 4.2% |
| WMUR/University of New Hampshire | April 7–17, 2016 | Hillary Clinton | 48% | Ted Cruz | 34% | 14 | 553 | ± 4.2% |
| WMUR/University of New Hampshire | April 7–17, 2016 | Hillary Clinton | 36% | John Kasich | 50% | 14 | 553 | ± 4.2% |
| WMUR/University of New Hampshire | April 7–17, 2016 | Bernie Sanders | 58% | Donald Trump | 31% | 27 | 553 | ± 4.2% |
| WMUR/University of New Hampshire | April 7–17, 2016 | Bernie Sanders | 61% | Ted Cruz | 30% | 31 | 553 | ± 4.2% |
| WMUR/University of New Hampshire | April 7–17, 2016 | Bernie Sanders | 50% | John Kasich | 44% | 6 | 553 | ± 4.2% |
| Dartmouth College | April 11–15, 2016 | Hillary Clinton | 34% | Donald Trump | 29% | 5 | 362 | ± 5.15% |
| Dartmouth College | April 11–15, 2016 | Hillary Clinton | 34% | Ted Cruz | 33% | 1 | 362 | ± 5.15% |
| Dartmouth College | April 11–15, 2016 | Hillary Clinton | 26% | John Kasich | 53% | 27 | 362 | ± 5.15% |
| Dartmouth College | April 11–15, 2016 | Bernie Sanders | 49% | Donald Trump | 28% | 21 | 362 | ± 5.15% |
| Dartmouth College | April 11–15, 2016 | Bernie Sanders | 48% | Ted Cruz | 26% | 22 | 362 | ± 5.15% |
| Dartmouth College | April 11–15, 2016 | Bernie Sanders | 39% | John Kasich | 44% | 5 | 362 | ± 5.15% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Bernie Sanders | 55% | Donald Trump | 34% | 21 | 628 | ± 3.9% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Bernie Sanders | 60% | Ted Cruz | 28% | 32 | 628 | ± 3.9% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Bernie Sanders | 54% | Marco Rubio | 35% | 19 | 628 | ± 3.9% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Bernie Sanders | 48% | John Kasich | 40% | 8 | 628 | ± 3.9% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Hillary Clinton | 47% | Donald Trump | 39% | 8 | 628 | ± 3.9% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Hillary Clinton | 46% | Ted Cruz | 35% | 11 | 628 | ± 3.9% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Hillary Clinton | 45% | Marco Rubio | 43% | 2 | 628 | ± 3.9% |
| WMUR/University of New Hampshire | February 20–28, 2016 | Hillary Clinton | 37% | John Kasich | 47% | 10 | 628 | ± 3.9% |
| UMass Lowell/7News | February 5–7, 2016 | Hillary Clinton | 45% | Donald Trump | 40% | 5 | 1,411 | ± 2.99% |
| UMass Lowell/7News | February 5–7, 2016 | Hillary Clinton | 45% | Ted Cruz | 40% | 5 | 1,411 | ± 2.99% |
| UMass Lowell/7News | February 5–7, 2016 | Hillary Clinton | 40% | Marco Rubio | 44% | 4 | 1,411 | ± 2.99% |
| UMass Lowell/7News | February 5–7, 2016 | Bernie Sanders | 55% | Donald Trump | 34% | 21 | 1,411 | ± 2.99% |
| UMass Lowell/7News | February 5–7, 2016 | Bernie Sanders | 56% | Ted Cruz | 31% | 25 | 1,411 | ± 2.99% |
| UMass Lowell/7News | February 5–7, 2016 | Bernie Sanders | 54% | Marco Rubio | 34% | 20 | 1,411 | ± 2.99% |
| UMass Lowell/7News | February 4–6, 2016 | Hillary Clinton | 45% | Donald Trump | 39% | 6 | 1,413 | ± 2.97% |
| UMass Lowell/7News | February 4–6, 2016 | Hillary Clinton | 45% | Ted Cruz | 39% | 6 | 1,413 | ± 2.97% |
| UMass Lowell/7News | February 4–6, 2016 | Hillary Clinton | 40% | Marco Rubio | 45% | 5 | 1,413 | ± 2.97% |
| UMass Lowell/7News | February 4–6, 2016 | Bernie Sanders | 55% | Donald Trump | 33% | 22 | 1,413 | ± 2.97% |
| UMass Lowell/7News | February 4–6, 2016 | Bernie Sanders | 57% | Ted Cruz | 30% | 27 | 1,413 | ± 2.97% |
| UMass Lowell/7News | February 4–6, 2016 | Bernie Sanders | 55% | Marco Rubio | 35% | 20 | 1,413 | ± 2.97% |
| UMass Lowell/7News | February 3–5, 2016 | Hillary Clinton | 46% | Donald Trump | 39% | 7 | 1,421 | ± 2.90% |
| UMass Lowell/7News | February 3–5, 2016 | Hillary Clinton | 46% | Ted Cruz | 39% | 7 | 1,421 | ± 2.90% |
| UMass Lowell/7News | February 3–5, 2016 | Hillary Clinton | 42% | Marco Rubio | 43% | 1 | 1,421 | ± 2.90% |
| UMass Lowell/7News | February 3–5, 2016 | Bernie Sanders | 54% | Donald Trump | 34% | 20 | 1,421 | ± 2.90% |
| UMass Lowell/7News | February 3–5, 2016 | Bernie Sanders | 57% | Ted Cruz | 30% | 27 | 1,421 | ± 2.90% |
| UMass Lowell/7News | February 3–5, 2016 | Bernie Sanders | 54% | Marco Rubio | 35% | 19 | 1,421 | ± 2.90% |
| UMass Lowell/7News | February 2–4, 2016 | Hillary Clinton | 44% | Donald Trump | 40% | 4 | 1,417 | ± 2.89% |
| UMass Lowell/7News | February 2–4, 2016 | Hillary Clinton | 44% | Ted Cruz | 41% | 3 | 1,417 | ± 2.89% |
| UMass Lowell/7News | February 2–4, 2016 | Hillary Clinton | 41% | Marco Rubio | 44% | 3 | 1,417 | ± 2.89% |
| UMass Lowell/7News | February 2–4, 2016 | Bernie Sanders | 54% | Donald Trump | 34% | 20 | 1,417 | ± 2.89% |
| UMass Lowell/7News | February 2–4, 2016 | Bernie Sanders | 54% | Ted Cruz | 33% | 21 | 1,417 | ± 2.89% |
| UMass Lowell/7News | February 2–4, 2016 | Bernie Sanders | 51% | Marco Rubio | 37% | 14 | 1,417 | ± 2.89% |
| CNN/WMUR | January 13–18, 2016 | Bernie Sanders | 57% | Donald Trump | 34% | 23 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Bernie Sanders | 56% | Ted Cruz | 33% | 23 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Bernie Sanders | 55% | Marco Rubio | 37% | 18 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Bernie Sanders | 57% | Chris Christie | 34% | 23 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Bernie Sanders | 54% | John Kasich | 33% | 21 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Hillary Clinton | 48% | Donald Trump | 39% | 9 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Hillary Clinton | 47% | Ted Cruz | 41% | 6 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Hillary Clinton | 44% | Marco Rubio | 45% | 1 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Hillary Clinton | 45% | Chris Christie | 42% | 3 | 903 | ± 3.4% |
| CNN/WMUR | January 13–18, 2016 | Hillary Clinton | 43% | John Kasich | 43% | Tied | 903 | ± 3.4% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Hillary Clinton | 45% | Donald Trump | 44% | 1 | 957 | ± 3.2% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Hillary Clinton | 44% | Ted Cruz | 48% | 4 | 957 | ± 3.2% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Hillary Clinton | 40% | Marco Rubio | 52% | 12 | 957 | ± 3.2% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Bernie Sanders | 56% | Donald Trump | 37% | 19 | 957 | ± 3.2% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Bernie Sanders | 55% | Ted Cruz | 36% | 19 | 957 | ± 3.2% |
| NBC News/Wall Street Journal/Marist | January 2–7, 2016 | Bernie Sanders | 50% | Marco Rubio | 41% | 9 | 957 | ± 3.2% |
| Public Policy Polling | January 4–6, 2016 | Hillary Clinton | 46% | Jeb Bush | 40% | 6 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Hillary Clinton | 50% | Ben Carson | 39% | 11 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Hillary Clinton | 48% | Ted Cruz | 40% | 8 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Hillary Clinton | 45% | Marco Rubio | 42% | 3 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Hillary Clinton | 50% | Donald Trump | 36% | 14 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Bernie Sanders | 50% | Jeb Bush | 38% | 12 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Bernie Sanders | 53% | Ben Carson | 34% | 19 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Bernie Sanders | 55% | Ted Cruz | 35% | 20 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Bernie Sanders | 51% | Marco Rubio | 37% | 14 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Bernie Sanders | 54% | Donald Trump | 34% | 20 | 1,036 | ± 3% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 41% | Donald Trump | 41% | Gary Johnson | 10% | Tied | 300 | ± 5.66% |
| MassInc/WBUR | May 12–15, 2016 | Hillary Clinton | 37% | Donald Trump | 33% | Mitt Romney | 21% | 4 | 501 | ± 4.4% |
| WMUR/University of New Hampshire | April 7–17, 2016 | Hillary Clinton | 44% | Ted Cruz | 22% | Donald Trump | 19% | 22 | 553 | ± 4.2% |
| Public Policy Polling | January 4–6, 2016 | Hillary Clinton | 47% | Ted Cruz | 28% | Donald Trump | 18% | 19 | 1,036 | ± 3% |
| Public Policy Polling | January 4–6, 2016 | Hillary Clinton | 43% | Marco Rubio | 29% | Donald Trump | 20% | 14 | 1,036 | ± 3% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| WMUR/University of New Hampshire | August 20–28, 2016 | Hillary Clinton | 43% | Donald Trump | 32% | Gary Johnson | 12% | Jill Stein | 4% | 11 | 433 | ± 4.7% |
| CBS News/YouGov | August 10–12, 2016 | Hillary Clinton | 45% | Donald Trump | 36% | Gary Johnson | 5% | Jill Stein | 3% | 9 | 990 | ± 4.3% |
| Vox Populi | August 7–8, 2016 | Hillary Clinton | 41% | Donald Trump | 31% | Gary Johnson | 11% | Jill Stein | 3% | 10 | 820 | ± 3.4% |
| MassInc/WBUR | July 29 – August 1, 2016 | Hillary Clinton | 47% | Donald Trump | 32% | Gary Johnson | 8% | Jill Stein | 3% | 15 | 609 | ± 4% |
| WMUR/University of New Hampshire | July 9–18, 2016 | Hillary Clinton | 37% | Donald Trump | 37% | Gary Johnson | 10% | Jill Stein | 5% | Tied | 469 | ± 4.2% |

## New Jersey

14 electoral votes (Democratic in 2008) 57%–42% (Democratic in 2012) 58%–41%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Fairleigh Dickinson University | June 22–26, 2016 | Hillary Clinton | 52% | Donald Trump | 31% | 21 | 712 | ± 3.8% |
| CBS News/YouGov | May 31 – June 3, 2016 | Hillary Clinton | 49% | Donald Trump | 34% | 15 | 1,194 | ± 3.8% |
| CBS News/YouGov | May 31 – June 3, 2016 | Bernie Sanders | 52% | Donald Trump | 34% | 18 | 1,194 | ± 3.8% |
| Monmouth University | May 23–27, 2016 | Hillary Clinton | 38% | Donald Trump | 34% | 4 | 806 | ± 3.7% |
| Fairleigh Dickinson University | May 18–22, 2016 | Hillary Clinton | 48% | Donald Trump | 37% | 11 | 702 | ± 3.9% |
| Fairleigh Dickinson University | May 18–22, 2016 | Bernie Sanders | 57% | Donald Trump | 33% | 24 | 702 | ± 3.9% |
| Quinnipiac University | May 10–16, 2016 | Hillary Clinton | 45% | Donald Trump | 38% | 7 | 1,989 | ± 2.2% |
| Quinnipiac University | May 10–16, 2016 | Bernie Sanders | 49% | Donald Trump | 37% | 12 | 1,989 | ± 2.2% |
| Rutgers | April 1–8, 2016 | Hillary Clinton | 50% | Donald Trump | 36% | 14 | 738 | ± 4.0% |
| Rutgers | April 1–8, 2016 | Hillary Clinton | 50% | Ted Cruz | 35% | 15 | 738 | ± 4.0% |
| Rutgers | April 1–8, 2016 | Hillary Clinton | 43% | John Kasich | 43% | Tied | 738 | ± 4.0% |
| Rutgers | April 1–8, 2016 | Bernie Sanders | 55% | Donald Trump | 34% | 21 | 738 | ± 4.0% |
| Fairleigh Dickinson University | February 24–28, 2016 | Hillary Clinton | 52% | Donald Trump | 36% | 16 | 694 | ± 3.9% |
| Fairleigh Dickinson University | February 24–28, 2016 | Bernie Sanders | 51% | Donald Trump | 36% | 15 | 694 | ± 3.9% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Fairleigh Dickinson University | June 22–26, 2016 | Hillary Clinton | 44% | Donald Trump | 32% | Gary Johnson | 9% | 12 | 712 | ± 3.8% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Monmouth University | May 23–27, 2016 | Hillary Clinton | 37% | Donald Trump | 31% | Gary Johnson | 5% | Jill Stein | 4% | 6 | 806 | ± 3.7% |

## New Mexico

5 electoral votes (Democratic in 2008) 57%–42% (Democratic in 2012) 53%–43%
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | May 13–15, 2016 | Hillary Clinton | 41% | Donald Trump | 33% | Gary Johnson | 14% | 8 | 802 | ± 3.5% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 19–21, 2016 | Hillary Clinton | 40% | Donald Trump | 31% | Gary Johnson | 16% | Jill Stein | 4% | 9 | 1,103 | ± 3% |

## New York

29 electoral votes (Democratic in 2008) 63%–36% (Democratic in 2012) 63%–35%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Siena College | August 7–10, 2016 | Hillary Clinton | 57% | Donald Trump | 27% | 30 | 717 | ± 4.3% |
| Gravis Marketing | August 4–8, 2016 | Hillary Clinton | 53% | Donald Trump | 36% | 17 | 1,717 | ±2.4% |
| Quinnipiac University | July 13–17, 2016 | Hillary Clinton | 47% | Donald Trump | 35% | 12 | 1,104 | ± 3% |
| Siena College | June 22–28, 2016 | Hillary Clinton | 54% | Donald Trump | 31% | 23 | 803 | ± 4.0% |
| Siena College | May 22–26, 2016 | Hillary Clinton | 52% | Donald Trump | 31% | 21 | 825 | ± 3.9% |
| Siena College | April 24–27, 2016 | Hillary Clinton | 56% | Donald Trump | 30% | 26 | 802 | ± 4.1% |
| Emerson College | April 15–17, 2016 | Hillary Clinton | 55% | Donald Trump | 36% | 19 | 1,047 | ± 2.95% |
| Emerson College | April 15–17, 2016 | Hillary Clinton | 59% | Ted Cruz | 28% | 31 | 1,047 | ± 2.95% |
| Emerson College | April 15–17, 2016 | Hillary Clinton | 49% | John Kasich | 39% | 10 | 1,047 | ± 2.95% |
| Emerson College | April 15–17, 2016 | Bernie Sanders | 51% | Donald Trump | 37% | 14 | 1,047 | ± 2.95% |
| Emerson College | April 15–17, 2016 | Bernie Sanders | 58% | Ted Cruz | 27% | 31 | 1,047 | ± 2.95% |
| Public Policy Polling | April 7–10, 2016 | Hillary Clinton | 55% | Donald Trump | 35% | 20 | 1,403 | ± 2.6% |
| Public Policy Polling | April 7–10, 2016 | Hillary Clinton | 56% | Ted Cruz | 30% | 26 | 1,403 | ± 2.6% |
| Public Policy Polling | April 7–10, 2016 | Hillary Clinton | 50% | John Kasich | 36% | 14 | 1,403 | ± 2.6% |
| Public Policy Polling | April 7–10, 2016 | Bernie Sanders | 58% | Donald Trump | 33% | 25 | 1,403 | ± 2.6% |
| Public Policy Polling | April 7–10, 2016 | Bernie Sanders | 59% | Ted Cruz | 27% | 32 | 1,403 | ± 2.6% |
| Public Policy Polling | April 7–10, 2016 | Bernie Sanders | 54% | John Kasich | 35% | 19 | 1,403 | ± 2.6% |
| NBC News/Wall Street Journal/Marist | April 6–10, 2016 | Hillary Clinton | 61% | Donald Trump | 32% | 29 | 1,987 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | April 6–10, 2016 | Hillary Clinton | 61% | Ted Cruz | 31% | 30 | 1,987 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | April 6–10, 2016 | Hillary Clinton | 53% | John Kasich | 38% | 15 | 1,987 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | April 6–10, 2016 | Bernie Sanders | 64% | Donald Trump | 31% | 33 | 1,987 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | April 6–10, 2016 | Bernie Sanders | 65% | Ted Cruz | 28% | 37 | 1,987 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | April 6–10, 2016 | Bernie Sanders | 57% | John Kasich | 35% | 22 | 1,987 | ± 2.2% |
| NY1/Baruch College | April 5–10, 2016 | Hillary Clinton | 51% | Donald Trump | 35% | 16 | 1,306 | ± 2.9% |
| NY1/Baruch College | April 5–10, 2016 | Bernie Sanders | 54% | Donald Trump | 32% | 22 | 1,306 | ± 2.9% |
| Emerson College | April 6–7, 2016 | Hillary Clinton | 54% | Donald Trump | 36% | 18 | 864 | ± 3.3% |
| Emerson College | April 6–7, 2016 | Hillary Clinton | 58% | Ted Cruz | 30% | 28 | 864 | ± 3.3% |
| Emerson College | April 6–7, 2016 | Hillary Clinton | 48% | John Kasich | 41% | 7 | 864 | ± 3.3% |
| Emerson College | April 6–7, 2016 | Bernie Sanders | 51% | Donald Trump | 38% | 13 | 864 | ± 3.3% |
| Emerson College | April 6–7, 2016 | Bernie Sanders | 56% | Ted Cruz | 29% | 27 | 864 | ± 3.3% |
| Fox News | April 4–7, 2016 | Hillary Clinton | 53% | Donald Trump | 37% | 16 | 1,403 | ± 2.5% |
| Fox News | April 4–7, 2016 | Bernie Sanders | 54% | Donald Trump | 35% | 19 | 1,403 | ± 2.5% |
| Quinnipiac University | March 22–29, 2016 | Hillary Clinton | 53% | Donald Trump | 33% | 20 | 1,667 | ± 2.4% |
| Quinnipiac University | March 22–29, 2016 | Hillary Clinton | 53% | Ted Cruz | 32% | 21 | 1,667 | ± 2.4% |
| Quinnipiac University | March 22–29, 2016 | Hillary Clinton | 46% | John Kasich | 41% | 5 | 1,667 | ± 2.4% |
| Quinnipiac University | March 22–29, 2016 | Bernie Sanders | 56% | Donald Trump | 32% | 24 | 1,667 | ± 2.4% |
| Quinnipiac University | March 22–29, 2016 | Bernie Sanders | 56% | Ted Cruz | 28% | 28 | 1,667 | ± 2.4% |
| Quinnipiac University | March 22–29, 2016 | Bernie Sanders | 47% | John Kasich | 37% | 10 | 1,667 | ± 2.4% |
| Emerson College | March 14–16, 2016 | Hillary Clinton | 55% | Donald Trump | 36% | 19 | 768 | ± 3.5% |
| Emerson College | March 14–16, 2016 | Hillary Clinton | 61% | Ted Cruz | 30% | 31 | 768 | ± 3.5% |
| Emerson College | March 14–16, 2016 | Bernie Sanders | 53% | Donald Trump | 36% | 17 | 768 | ± 3.5% |
| Siena College | February 28 – March 3, 2016 | Hillary Clinton | 56% | Marco Rubio | 35% | 21 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Hillary Clinton | 58% | Ted Cruz | 33% | 25 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Hillary Clinton | 57% | Donald Trump | 34% | 23 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Hillary Clinton | 49% | John Kasich | 42% | 7 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Bernie Sanders | 58% | Marco Rubio | 32% | 26 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Bernie Sanders | 63% | Ted Cruz | 26% | 37 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Bernie Sanders | 57% | Donald Trump | 33% | 24 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Bernie Sanders | 54% | John Kasich | 35% | 19 | 800 | ± 4.1% |
| Siena College | January 31 – February 3, 2016 | Hillary Clinton | 54% | Marco Rubio | 37% | 17 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Hillary Clinton | 57% | Ted Cruz | 34% | 23 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Hillary Clinton | 57% | Donald Trump | 32% | 25 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Hillary Clinton | 57% | Jeb Bush | 33% | 24 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Hillary Clinton | 57% | John Kasich | 31% | 26 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Hillary Clinton | 55% | Chris Christie | 36% | 19 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Bernie Sanders | 56% | Marco Rubio | 34% | 22 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Bernie Sanders | 60% | Ted Cruz | 30% | 30 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Bernie Sanders | 63% | Donald Trump | 30% | 33 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Bernie Sanders | 61% | Jeb Bush | 30% | 31 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Bernie Sanders | 59% | John Kasich | 29% | 30 | 930 | ± 3.8% |
| Siena College | January 31 – February 3, 2016 | Bernie Sanders | 58% | Chris Christie | 35% | 23 | 930 | ± 3.8% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Siena College | February 28 – March 3, 2016 | Hillary Clinton | 42% | Donald Trump | 25% | Michael Bloomberg | 26% | 16 | 800 | ± 4.1% |
| Siena College | February 28 – March 3, 2016 | Bernie Sanders | 42% | Donald Trump | 24% | Michael Bloomberg | 28% | 14 | 800 | ± 4.1% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian Independence | % | Green | % | Lead margin | Sample size | Margin of error |
| Emerson College | August 28–30, 2016 | Hillary Clinton | 52% | Donald Trump | 34% | Gary Johnson | 8% | Jill Stein | 3% | 18 | 800 | ± 3.4% |
| Siena College | August 7–10, 2016 | Hillary Clinton | 50% | Donald Trump | 25% | Gary Johnson | 9% | Jill Stein | 6% | 25 | 717 | ± 4.3% |
| Gravis Marketing | August 4–8, 2016 | Hillary Clinton | 48% | Donald Trump | 34% | Gary Johnson | 6% | Jill Stein | 4% | 14 | 1,717 | ±2.4% |
| Quinnipiac University | July 13–17, 2016 | Hillary Clinton | 45% | Donald Trump | 33% | Gary Johnson | 6% | Jill Stein | 4% | 12 | 1,104 | ± 3% |

## North Carolina

15 electoral votes (Democratic in 2008) 50%–49% (Republican in 2012) 50%–48%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | August 29 – September 7, 2016 | Hillary Clinton | 47% | Donald Trump | 43% | 4 | 751 | ± 3.6% |
| Public Policy Polling | August 26–27, 2016 | Hillary Clinton | 45% | Donald Trump | 44% | 1 | 1,177 | |
| CNN/ORC | August 18–23, 2016 | Hillary Clinton | 48% | Donald Trump | 47% | 1 | 803 | ± 3.5% |
| Gravis Marketing | August 15–17, 2016 | Hillary Clinton | 44% | Donald Trump | 43% | 1 | 723 | ± 3.6% |
| NBC News/Wall Street Journal/Marist | August 4–10, 2016 | Hillary Clinton | 48% | Donald Trump | 39% | 9 | 921 | ± 3.2% |
| Public Policy Polling | August 5–7, 2016 | Hillary Clinton | 47% | Donald Trump | 46% | 1 | 830 | ± 3.4% |
| NBC News/Wall Street Journal/Marist | July 5–11, 2016 | Hillary Clinton | 44% | Donald Trump | 38% | 6 | 907 | ± 3.3% |
| Public Policy Polling | June 20–21, 2016 | Hillary Clinton | 46% | Donald Trump | 48% | 2 | 942 | ± 3.2% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 51% | Donald Trump | 41% | 10 | 300 | ± 5.66% |
| Public Policy Polling | May 20–22, 2016 | Hillary Clinton | 43% | Donald Trump | 47% | 4 | 928 | 3.2% |
| Public Policy Polling | May 20–22, 2016 | Bernie Sanders | 48% | Donald Trump | 44% | 4 | 928 | 3.2% |
| Civitas | April 23–26, 2016 | Hillary Clinton | 49% | Donald Trump | 37% | 12 | 600 | 4.0% |
| Civitas | April 23–26, 2016 | Bernie Sanders | 54% | Donald Trump | 35% | 19 | 600 | 4.0% |
| Civitas | April 23–26, 2016 | Hillary Clinton | 46% | Ted Cruz | 40% | 6 | 600 | 4.0% |
| Civitas | April 23–26, 2016 | Bernie Sanders | 52% | Ted Cruz | 36% | 16 | 600 | 4.0% |
| Public Policy Polling | April 22–24, 2016 | Hillary Clinton | 44% | Donald Trump | 44% | Tied | 960 | 3.2 |
| Public Policy Polling | April 22–24, 2016 | Hillary Clinton | 45% | Ted Cruz | 40% | 5 | 960 | 3.2 |
| Public Policy Polling | April 22–24, 2016 | Hillary Clinton | 39% | John Kasich | 46% | 7 | 960 | 3.2 |
| Public Policy Polling | April 22–24, 2016 | Bernie Sanders | 46% | Donald Trump | 43% | 3 | 960 | 3.2 |
| Public Policy Polling | April 22–24, 2016 | Bernie Sanders | 46% | Ted Cruz | 38% | 8 | 960 | 3.2 |
| Public Policy Polling | April 22–24, 2016 | Bernie Sanders | 41% | John Kasich | 43% | 2 | 960 | 3.2 |
| Elon University | April 10–15, 2016 | Hillary Clinton | 45% | Donald Trump | 39% | 6 | 621 | 3.96 |
| Elon University | April 10–15, 2016 | Hillary Clinton | 41% | Ted Cruz | 44% | 3 | 621 | 3.96 |
| Elon University | April 10–15, 2016 | Bernie Sanders | 51% | Donald Trump | 38% | 13 | 621 | 3.96 |
| Elon University | April 10–15, 2016 | Bernie Sanders | 49% | Ted Cruz | 39% | 10 | 621 | 3.96 |
| Public Policy Polling | March 18–20, 2016 | Hillary Clinton | 44% | Donald Trump | 42% | 2 | 843 | 3.4 |
| Public Policy Polling | March 18–20, 2016 | Hillary Clinton | 45% | Ted Cruz | 42% | 3 | 843 | 3.4 |
| Public Policy Polling | March 18–20, 2016 | Hillary Clinton | 41% | John Kasich | 49% | 8 | 843 | 3.4 |
| Public Policy Polling | March 18–20, 2016 | Bernie Sanders | 48% | Donald Trump | 41% | 7 | 843 | 3.4 |
| Public Policy Polling | March 18–20, 2016 | Bernie Sanders | 45% | Ted Cruz | 42% | 3 | 843 | 3.4 |
| Public Policy Polling | March 18–20, 2016 | Bernie Sanders | 41% | John Kasich | 44% | 3 | 843 | 3.4 |
| Elon University | February 15–19, 2016 | Hillary Clinton | 47% | Donald Trump | 41% | 6 | 1,530 | 2.51 |
| Elon University | February 15–19, 2016 | Hillary Clinton | 46% | Ted Cruz | 46% | Tied | 1,530 | 2.51 |
| Elon University | February 15–19, 2016 | Hillary Clinton | 45% | Marco Rubio | 48% | 3 | 1,530 | 2.51 |
| Elon University | February 15–19, 2016 | Bernie Sanders | 48% | Donald Trump | 40% | 8 | 1,530 | 2.51 |
| Elon University | February 15–19, 2016 | Bernie Sanders | 47% | Ted Cruz | 43% | 4 | 1,530 | 2.51 |
| Elon University | February 15–19, 2016 | Bernie Sanders | 43% | Marco Rubio | 46% | 3 | 1,530 | 2.51 |
| SurveyUSA | February 14–16, 2016 | Hillary Clinton | 43% | Donald Trump | 45% | 2 | 1,250 | 2.8% |
| SurveyUSA | February 14–16, 2016 | Hillary Clinton | 43% | Ted Cruz | 48% | 5 | 1,250 | 2.8% |
| SurveyUSA | February 14–16, 2016 | Hillary Clinton | 42% | Marco Rubio | 49% | 7 | 1,250 | 2.8% |
| SurveyUSA | February 14–16, 2016 | Bernie Sanders | 44% | Donald Trump | 44% | Tied | 1,250 | 2.8% |
| SurveyUSA | February 14–16, 2016 | Bernie Sanders | 46% | Ted Cruz | 42% | 4 | 1,250 | 2.8% |
| SurveyUSA | February 14–16, 2016 | Bernie Sanders | 45% | Marco Rubio | 44% | 1 | 1,250 | 2.8% |
| Public Policy Polling | February 14–16, 2016 | Hillary Clinton | 42% | Jeb Bush | 44% | 2 | 1,291 | 2.7% |
| Public Policy Polling | February 14–16, 2016 | Hillary Clinton | 43% | Ted Cruz | 46% | 3 | 1,291 | 2.7% |
| Public Policy Polling | February 14–16, 2016 | Hillary Clinton | 40% | Marco Rubio | 49% | 9 | 1,291 | 2.7% |
| Public Policy Polling | February 14–16, 2016 | Hillary Clinton | 43% | Donald Trump | 44% | 1 | 1,291 | 2.7% |
| Public Policy Polling | February 14–16, 2016 | Bernie Sanders | 43% | Jeb Bush | 42% | 1 | 1,291 | 2.7% |
| Public Policy Polling | February 14–16, 2016 | Bernie Sanders | 43% | Ted Cruz | 43% | Tied | 1,291 | 2.7% |
| Public Policy Polling | February 14–16, 2016 | Bernie Sanders | 41% | Marco Rubio | 45% | 4 | 1,291 | 2.7% |
| Public Policy Polling | February 14–16, 2016 | Bernie Sanders | 44% | Donald Trump | 42% | 2 | 1,291 | 2.7% |
| Public Policy Polling | January 18–19, 2016 | Hillary Clinton | 43% | Jeb Bush | 45% | 2 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Hillary Clinton | 44% | Ben Carson | 47% | 3 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Hillary Clinton | 43% | Ted Cruz | 46% | 3 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Hillary Clinton | 42% | Marco Rubio | 47% | 5 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Hillary Clinton | 43% | Donald Trump | 45% | 2 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Bernie Sanders | 41% | Jeb Bush | 42% | 1 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Bernie Sanders | 40% | Ben Carson | 44% | 4 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Bernie Sanders | 38% | Ted Cruz | 43% | 5 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Bernie Sanders | 39% | Marco Rubio | 43% | 4 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Bernie Sanders | 43% | Donald Trump | 44% | 1 | 948 | 3.2% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | August 29 – September 7, 2016 | Hillary Clinton | 42% | Donald Trump | 38% | Gary Johnson | 15% | 4 | 751 | ± 3.6% |
| Monmouth University | August 20–23, 2016 | Hillary Clinton | 44% | Donald Trump | 42% | Gary Johnson | 7% | 2 | 401 | ± 4.9% |
| CNN/ORC | August 18–23, 2016 | Hillary Clinton | 45% | Donald Trump | 45% | Gary Johnson | 9% | Tied | 803 | ± 3.5% |
| Civitas/SurveyUSA | July 31 – August 2, 2016 | Hillary Clinton | 42% | Donald Trump | 46% | Gary Johnson | 6% | 4 | 400 | ± 5.0% |
| Civitas | June 21–23, 2016 | Hillary Clinton | 42% | Donald Trump | 40% | Gary Johnson | 6% | 2 | 600 | ± 4.0% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 48% | Donald Trump | 38% | Gary Johnson | 8% | 10 | 300 | ± 5.66% |
| Civitas | May 21–23, 2016 | Hillary Clinton | 36% | Donald Trump | 39% | Gary Johnson | 8% | 3 | 600 | ± 4.0% |
| Public Policy Polling | February 14–16, 2016 | Hillary Clinton | 37% | Donald Trump | 39% | Michael Bloomberg | 14% | 2 | 1,291 | ± 2.7% |
| Public Policy Polling | February 14–16, 2016 | Bernie Sanders | 34% | Donald Trump | 40% | Michael Bloomberg | 16% | 6 | 1,291 | ± 2.7% |
| Public Policy Polling | January 18–19, 2016 | Hillary Clinton | 40% | Donald Trump | 41% | Michael Bloomberg | 10% | 1 | 948 | 3.2% |
| Public Policy Polling | January 18–19, 2016 | Hillary Clinton | 40% | Donald Trump | 42% | Jim Webb | 7% | 2 | 948 | 3.2% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| CBS News/YouGov | August 30 – September 2, 2016 | Hillary Clinton | 46% | Donald Trump | 42% | Gary Johnson | 4% | Jill Stein | 2% | 4 | 1,088 | ± 4% |
| Emerson College | August 27–29, 2016 | Hillary Clinton | 43% | Donald Trump | 45% | Gary Johnson | 8% | Jill Stein | 2% | 2 | 800 | ± 3.4% |
| Gravis Marketing | August 15–17, 2016 | Hillary Clinton | 38% | Donald Trump | 39% | Gary Johnson | 10% | Jill Stein | 2% | 1 | 723 | ± 3.6% |
| NBC News/Wall Street Journal/Marist | August 4–10, 2016 | Hillary Clinton | 45% | Donald Trump | 36% | Gary Johnson | 9% | Jill Stein | 2% | 9 | 921 | ± 3.2% |
| Public Policy Polling | August 5–7, 2016 | Hillary Clinton | 43% | Donald Trump | 41% | Gary Johnson | 7% | Jill Stein | 2% | 2 | 830 | ± 3.4% |
| NBC News/Wall Street Journal/Marist | July 5–11, 2016 | Hillary Clinton | 42% | Donald Trump | 36% | Gary Johnson | 7% | Jill Stein | 2% | 6 | 907 | ± 3.3% |
| CBS News/YouGov | June 21–24, 2016 | Hillary Clinton | 44% | Donald Trump | 42% | Gary Johnson | 2% | Jill Stein | 1% | 2 | 988 | ± 4% |
| Public Policy Polling | June 20–21, 2016 | Hillary Clinton | 43% | Donald Trump | 43% | Gary Johnson | 4% | Jill Stein | 2% | Tied | 947 | ± 3.2% |
| Public Policy Polling | May 20–22, 2016 | Hillary Clinton | 41% | Donald Trump | 43% | Gary Johnson | 3% | Jill Stein | 2% | 2 | 928 | 3.2% |
| Public Policy Polling | May 20–22, 2016 | Bernie Sanders | 43% | Donald Trump | 40% | Gary Johnson | 3% | Jill Stein | 2% | 3 | 928 | 3.2% |

## Ohio

18 electoral votes (Democratic in 2008) 51%–47% (Democratic in 2012) 51%–48%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | August 29 – September 7, 2016 | Hillary Clinton | 45% | Donald Trump | 46% | 1 | 775 | ± 3.5% |
| Public Policy Polling | August 26–27, 2016 | Hillary Clinton | 46% | Donald Trump | 42% | 4 | 1,134 | ± 2.9% |
| OnMessage | August 13–17, 2016 | Hillary Clinton | 45% | Donald Trump | 45% | Tied | 600 | ± 4.0% |
| NBC News/Wall Street Journal/Marist | August 3–7, 2016 | Hillary Clinton | 43% | Donald Trump | 38% | 5 | 889 | ± 3.1% |
| Quinnipiac University | July 30 – August 7, 2016 | Hillary Clinton | 49% | Donald Trump | 45% | 4 | 812 | ± 3.4% |
| Public Policy Polling | July 22–24, 2016 | Hillary Clinton | 45% | Donald Trump | 45% | Tied | 1,334 | ± 2.7% |
| Suffolk University | July 18–20, 2016 | Hillary Clinton | 44% | Donald Trump | 44% | Tied | 500 | ± 4.4% |
| Quinnipiac University | June 30 – July 11, 2016 | Hillary Clinton | 41% | Donald Trump | 41% | Tied | 955 | ± 3.2% |
| NBC News/Wall Street Journal/Marist | July 5–10, 2016 | Hillary Clinton | 39% | Donald Trump | 39% | Tied | 848 | ± 3.4% |
| Gravis Marketing/One America News | June 27–28, 2016 | Hillary Clinton | 46% | Donald Trump | 47% | 1 | 1,270 | ± 2.8% |
| Public Policy Polling | June 22–23, 2016 | Hillary Clinton | 44% | Donald Trump | 40% | 4 | 708 | ± 3.7% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 47% | Donald Trump | 48% | 1 | 300 | ± 5.66% |
| Quinnipiac University | June 8–19, 2016 | Hillary Clinton | 40% | Donald Trump | 40% | Tied | 971 | ± 3.1% |
| Quinnipiac University | June 8–19, 2016 | Bernie Sanders | 48% | Donald Trump | 38% | 10 | 971 | ± 3.1% |
| Zogby Analytics | May 18–22, 2016 | Hillary Clinton | 45% | Donald Trump | 39% | 6 | 679 | ± 3.8% |
| CBS News/YouGov | May 16–19, 2016 | Hillary Clinton | 44% | Donald Trump | 39% | 5 | 992 | ± 3.7% |
| CBS News/YouGov | May 16–19, 2016 | Bernie Sanders | 48% | Donald Trump | 39% | 9 | 992 | ± 3.7% |
| Quinnipiac University | April 27 – May 8, 2016 | Hillary Clinton | 39% | Donald Trump | 43% | 4 | 1,042 | ± 3.0% |
| Quinnipiac University | April 27 – May 8, 2016 | Bernie Sanders | 44% | Donald Trump | 42% | 2 | 1,042 | ± 3.0% |
| Public Policy Polling | April 26–27, 2016 | Hillary Clinton | 45% | Donald Trump | 42% | 3 | 799 | 3.2% |
| Public Policy Polling | April 26–27, 2016 | Hillary Clinton | 44% | Ted Cruz | 35% | 9 | 799 | 3.2% |
| Public Policy Polling | April 26–27, 2016 | Hillary Clinton | 41% | John Kasich | 43% | 2 | 799 | 3.2% |
| Public Policy Polling | April 26–27, 2016 | Bernie Sanders | 45% | Donald Trump | 41% | 4 | 799 | 3.2% |
| Public Policy Polling | April 26–27, 2016 | Bernie Sanders | 44% | Ted Cruz | 35% | 9 | 799 | 3.2% |
| Public Policy Polling | April 26–27, 2016 | Bernie Sanders | 37% | John Kasich | 47% | 10 | 799 | 3.2% |
| NBC News/Wall Street Journal/Marist | March 4–10, 2016 | Hillary Clinton | 48% | Donald Trump | 42% | 6 | 2,052 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | March 4–10, 2016 | Hillary Clinton | 45% | Ted Cruz | 47% | 2 | 2,052 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | March 4–10, 2016 | Hillary Clinton | 36% | John Kasich | 57% | 21 | 2,052 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | March 4–10, 2016 | Bernie Sanders | 50% | Donald Trump | 41% | 9 | 2,052 | ± 2.2% |
| NBC News/Wall Street Journal/Marist | March 4–10, 2016 | Bernie Sanders | 45% | Ted Cruz | 44% | 1 | 2,052 | ± 2.2% |
| Public Policy Polling | March 4–6, 2016 | Hillary Clinton | 45% | Ted Cruz | 40% | 5 | 1,248 | 2.8% |
| Public Policy Polling | March 4–6, 2016 | Hillary Clinton | 37% | John Kasich | 52% | 15 | 1,248 | 2.8% |
| Public Policy Polling | March 4–6, 2016 | Hillary Clinton | 44% | Marco Rubio | 41% | 3 | 1,248 | 2.8% |
| Public Policy Polling | March 4–6, 2016 | Hillary Clinton | 45% | Donald Trump | 40% | 5 | 1,248 | 2.8% |
| Public Policy Polling | March 4–6, 2016 | Bernie Sanders | 44% | Ted Cruz | 38% | 6 | 1,248 | 2.8% |
| Public Policy Polling | March 4–6, 2016 | Bernie Sanders | 34% | John Kasich | 54% | 20 | 1,248 | 2.8% |
| Public Policy Polling | March 4–6, 2016 | Bernie Sanders | 42% | Marco Rubio | 38% | 4 | 1,248 | 2.8% |
| Public Policy Polling | March 4–6, 2016 | Bernie Sanders | 44% | Donald Trump | 40% | 4 | 1,248 | 2.8% |
| CNN/ORC | March 2–6, 2016 | Hillary Clinton | 50% | Donald Trump | 43% | 7 | 884 | 3.5% |
| CNN/ORC | March 2–6, 2016 | Hillary Clinton | 48% | Marco Rubio | 46% | 2 | 884 | 3.5% |
| CNN/ORC | March 2–6, 2016 | Hillary Clinton | 51% | Ted Cruz | 42% | 9 | 884 | 3.5% |
| Quinnipiac University | February 16–20, 2016 | Hillary Clinton | 43% | Ted Cruz | 46% | 3 | 1,539 | 2.5% |
| Quinnipiac University | February 16–20, 2016 | Hillary Clinton | 37% | John Kasich | 54% | 17 | 1,539 | 2.5% |
| Quinnipiac University | February 16–20, 2016 | Hillary Clinton | 42% | Marco Rubio | 47% | 5 | 1,539 | 2.5% |
| Quinnipiac University | February 16–20, 2016 | Hillary Clinton | 42% | Donald Trump | 44% | 2 | 1,539 | 2.5% |
| Quinnipiac University | February 16–20, 2016 | Bernie Sanders | 44% | Ted Cruz | 42% | 2 | 1,539 | 2.5% |
| Quinnipiac University | February 16–20, 2016 | Bernie Sanders | 35% | John Kasich | 54% | 19 | 1,539 | 2.5% |
| Quinnipiac University | February 16–20, 2016 | Bernie Sanders | 42% | Marco Rubio | 44% | 2 | 1,539 | 2.5% |
| Quinnipiac University | February 16–20, 2016 | Bernie Sanders | 44% | Donald Trump | 44% | Tied | 1,539 | 2.5% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 41% | Donald Trump | 41% | Gary Johnson | 14% | Tied | 300 | ± 5.66% |
| Public Policy Polling | March 4–6, 2016 | Hillary Clinton | 37% | Donald Trump | 37% | Michael Bloomberg | 15% | Tied | 1,248 | ± 2.8% |
| Public Policy Polling | March 4–6, 2016 | Bernie Sanders | 38% | Donald Trump | 37% | Michael Bloomberg | 13% | 1 | 1,248 | ± 2.8% |
| Quinnipiac University | February 16–20, 2016 | Bernie Sanders | 37% | Ted Cruz | 37% | Michael Bloomberg | 11% | Tied | 1,539 | ± 2.5% |
| Quinnipiac University | February 16–20, 2016 | Bernie Sanders | 35% | Donald Trump | 38% | Michael Bloomberg | 13% | 3 | 1,539 | ± 2.5% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | August 29 – September 7, 2016 | Hillary Clinton | 37% | Donald Trump | 41% | Gary Johnson | 14% | Jill Stein | 4% | 4 | 775 | ± 3.5% |
| Emerson College | August 25–27, 2016 | Hillary Clinton | 43% | Donald Trump | 43% | Gary Johnson | 10% | Jill Stein | 2% | Tied | 800 | ± 3.4% |
| Monmouth University | August 18–21, 2016 | Hillary Clinton | 43% | Donald Trump | 39% | Gary Johnson | 10% | Jill Stein | <1% | 4 | 402 | ± 4.9% |
| CBS News/YouGov | August 17–19, 2016 | Hillary Clinton | 46% | Donald Trump | 40% | Gary Johnson | 6% | Jill Stein | 2% | 6 | 997 | ± 3.9% |
| OnMessage | August 13–17, 2016 | Hillary Clinton | 42% | Donald Trump | 42% | Gary Johnson | 8% | Jill Stein | 2% | Tied | 600 | ± 4.0% |
| NBC News/Wall Street Journal/Marist | August 3–7, 2016 | Hillary Clinton | 39% | Donald Trump | 35% | Gary Johnson | 12% | Jill Stein | 4% | 4 | 889 | ± 3.1% |
| Quinnipiac University | July 30 – August 7, 2016 | Hillary Clinton | 44% | Donald Trump | 42% | Gary Johnson | 8% | Jill Stein | 3% | 2 | 812 | ± 3.4% |
| Public Policy Polling | July 22–24, 2016 | Hillary Clinton | 39% | Donald Trump | 42% | Gary Johnson | 6% | Jill Stein | 2% | 3 | 1,334 | ± 2.7% |
| Suffolk University | July 18–20, 2016 | Hillary Clinton | 43% | Donald Trump | 39% | Gary Johnson | 5% | Jill Stein | 1% | 4 | 500 | ± 4.4% |
| CBS News/YouGov | July 13–15, 2016 | Hillary Clinton | 44% | Donald Trump | 40% | Gary Johnson | 5% | Jill Stein | 3% | 4 | 1,104 | ± 3.5% |
| Quinnipiac University | June 30 – July 11, 2016 | Hillary Clinton | 36% | Donald Trump | 37% | Gary Johnson | 7% | Jill Stein | 6% | 1 | 955 | ± 3.2% |
| NBC News/Wall Street Journal/Marist | July 5–10, 2016 | Hillary Clinton | 38% | Donald Trump | 35% | Gary Johnson | 9% | Jill Stein | 3% | 3 | 848 | ± 3.4% |
| Quinnipiac University | June 8–19, 2016 | Hillary Clinton | 38% | Donald Trump | 36% | Gary Johnson | 8% | Jill Stein | 3% | 2 | 971 | ± 3.1% |

## Oklahoma

7 electoral votes (Republican in 2008) 66%–34% (Republican in 2012) 67%–33%
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| SoonerPoll | July 20–25, 2016 | Hillary Clinton | 29% | Donald Trump | 53% | Gary Johnson | 7% | 24 | 298 | ± 4.91% |
| Cole Hargrave | May 2–4, 2016 | Hillary Clinton | 28% | Donald Trump | 48% | Gary Johnson | 6% | 20 | 500 | ± 4.3% |

## Oregon

7 electoral votes (Democratic in 2008) 57%–40% (Democratic in 2012) 54%–42%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Portland Tribune/iCitizen | June 23–27, 2016 | Hillary Clinton | 46% | Donald Trump | 32% | 14 | 555 | ± 4.0% |
| Clout Research | May 10–13, 2016 | Hillary Clinton | 42% | Donald Trump | 44% | 2 | 657 | ± 3.82% |
| DHM Research | May 6–9, 2016 | Hillary Clinton | 43% | Donald Trump | 32% | 11 | 901 | ± 3.3% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Clout Research | July 9–13, 2016 | Hillary Clinton | 43% | Donald Trump | 40% | Gary Johnson | 6% | Jill Stein | 3% | 3 | 701 | ± 3.7% |

## Pennsylvania

20 electoral votes (Democratic in 2008) 54%–44% (Democratic in 2012) 52%–47%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | August 29 – September 7, 2016 | Hillary Clinton | 48% | Donald Trump | 43% | 5 | 778 | ± 3.5% |
| Public Policy Polling | August 30–31, 2016 | Hillary Clinton | 47% | Donald Trump | 42% | 5 | 814 | ± 3.4% |
| GBA Strategies | August 21–28, 2016 | Hillary Clinton | 48% | Donald Trump | 43% | 5 | 1,200 | ± 4.4% |
| Public Policy Polling | August 26–27, 2016 | Hillary Clinton | 48% | Donald Trump | 43% | 5 | 1,194 | ± % |
| Franklin & Marshall College | August 25–29, 2016 | Hillary Clinton | 47% | Donald Trump | 40% | 7 | 496 | ± 5.6% |
| NBC News/Wall Street Journal/Marist | August 3–7, 2016 | Hillary Clinton | 48% | Donald Trump | 37% | 11 | 834 | ± 3.1% |
| Quinnipiac University | July 30 – August 7, 2016 | Hillary Clinton | 52% | Donald Trump | 42% | 10 | 815 | ± 3.4% |
| Susquehanna/ABC27 News | July 31 – August 4, 2016 | Hillary Clinton | 47% | Donald Trump | 37% | 10 | 772 | ± 3.53% |
| Franklin & Marshall College | July 29 – August 2, 2016 | Hillary Clinton | 49% | Donald Trump | 38% | 11 | 389 | ± 6.3% |
| Public Policy Polling | July 29–31, 2016 | Hillary Clinton | 49% | Donald Trump | 45% | 4 | 1,505 | ± 2.5% |
| Suffolk University | July 25–27, 2016 | Hillary Clinton | 50% | Donald Trump | 41% | 9 | 500 | ± 4.4% |
| Quinnipiac University | June 30 – July 11, 2016 | Hillary Clinton | 41% | Donald Trump | 43% | 2 | 982 | ± 3.1% |
| NBC News/Wall Street Journal/Marist | July 5–10, 2016 | Hillary Clinton | 45% | Donald Trump | 36% | 9 | 829 | ± 3.4% |
| Gravis Marketing/One America News Network | June 27–28, 2016 | Hillary Clinton | 48% | Donald Trump | 47% | 1 | 1,958 | ± 2.2% |
| Public Policy Polling | June 22–23, 2016 | Hillary Clinton | 46% | Donald Trump | 42% | 4 | 980 | ± 3.1% |
| Quinnipiac University | June 8–19, 2016 | Hillary Clinton | 42% | Donald Trump | 41% | 1 | 950 | ± 3.2% |
| Quinnipiac University | June 8–19, 2016 | Bernie Sanders | 47% | Donald Trump | 40% | 7 | 950 | ± 3.2% |
| Public Policy Polling | June 3–5, 2016 | Hillary Clinton | 44% | Donald Trump | 44% | Tied | 1,106 | ± 3.0% |
| Public Policy Polling | June 3–5, 2016 | Bernie Sanders | 51% | Donald Trump | 39% | 12 | 1,106 | ± 3.0% |
| Quinnipiac University | April 27 – May 8, 2016 | Hillary Clinton | 43% | Donald Trump | 42% | 1 | 1,077 | ± 3.0% |
| Quinnipiac University | April 27 – May 8, 2016 | Bernie Sanders | 47% | Donald Trump | 41% | 6 | 1,077 | ± 3.0% |
| NBC News/Wall Street Journal/Marist | April 18–20, 2016 | Hillary Clinton | 54% | Donald Trump | 39% | 15 | 2,606 | ± 1.9% |
| NBC News/Wall Street Journal/Marist | April 18–20, 2016 | Hillary Clinton | 52% | Ted Cruz | 41% | 11 | 2,606 | ± 1.9% |
| NBC News/Wall Street Journal/Marist | April 18–20, 2016 | Hillary Clinton | 45% | John Kasich | 48% | 3 | 2,606 | ± 1.9% |
| NBC News/Wall Street Journal/Marist | April 18–20, 2016 | Bernie Sanders | 57% | Donald Trump | 37% | 20 | 2,606 | ± 1.9% |
| NBC News/Wall Street Journal/Marist | April 18–20, 2016 | Bernie Sanders | 58% | Ted Cruz | 36% | 22 | 2,606 | ± 1.9% |
| NBC News/Wall Street Journal/Marist | April 18–20, 2016 | Bernie Sanders | 50% | John Kasich | 44% | 6 | 2,606 | ± 1.9% |
| Fox News | April 4–7, 2016 | Hillary Clinton | 44% | Donald Trump | 44% | Tied | 1,607 | ± 2.5% |
| Quinnipiac University | March 30 – April 4, 2016 | Hillary Clinton | 45% | Donald Trump | 42% | 3 | 1,737 | ± 2.4% |
| Quinnipiac University | March 30 – April 4, 2016 | Hillary Clinton | 43% | Ted Cruz | 43% | Tied | 1,737 | ± 2.4% |
| Quinnipiac University | March 30 – April 4, 2016 | Hillary Clinton | 35% | John Kasich | 51% | 16 | 1,737 | ± 2.4% |
| Quinnipiac University | March 30 – April 4, 2016 | Bernie Sanders | 48% | Donald Trump | 40% | 8 | 1,737 | ± 2.4% |
| Quinnipiac University | March 30 – April 4, 2016 | Bernie Sanders | 46% | Ted Cruz | 38% | 8 | 1,737 | ± 2.4% |
| Quinnipiac University | March 30 – April 4, 2016 | Bernie Sanders | 40% | John Kasich | 46% | 6 | 1,737 | ± 2.4% |
| Franklin & Marshall College | March 14–20, 2016 | Hillary Clinton | 46% | Donald Trump | 33% | 13 | 828 | ± 3.3% |
| Franklin & Marshall College | March 14–20, 2016 | Hillary Clinton | 45% | Ted Cruz | 35% | 10 | 828 | ± 3.3% |
| Mercyhurst University | March 1–11, 2016 | Hillary Clinton | 43% | Donald Trump | 35% | 8 | 421 | ± 4.8% |
| Mercyhurst University | March 1–11, 2016 | Hillary Clinton | 45% | Ted Cruz | 42% | 3 | 421 | ± 4.8% |
| Mercyhurst University | March 1–11, 2016 | Hillary Clinton | 36% | John Kasich | 49% | 13 | 421 | ± 4.8% |
| Mercyhurst University | March 1–11, 2016 | Hillary Clinton | 39% | Marco Rubio | 47% | 8 | 421 | ± 4.8% |
| Mercyhurst University | March 1–11, 2016 | Bernie Sanders | 49% | Donald Trump | 37% | 12 | 421 | ± 4.8% |
| Mercyhurst University | March 1–11, 2016 | Bernie Sanders | 48% | Ted Cruz | 40% | 8 | 421 | ± 4.8% |
| Mercyhurst University | March 1–11, 2016 | Bernie Sanders | 42% | John Kasich | 46% | 4 | 421 | ± 4.8% |
| Mercyhurst University | March 1–11, 2016 | Bernie Sanders | 41% | Marco Rubio | 46% | 5 | 421 | ± 4.8% |
| Harper Polling | March 1–2, 2016 | Hillary Clinton | 45% | Donald Trump | 40% | 5 | 662 | ± 3.75% |
| Harper Polling | March 1–2, 2016 | Hillary Clinton | 46% | Marco Rubio | 40% | 6 | 662 | ± 3.75% |
| Harper Polling | March 1–2, 2016 | Hillary Clinton | 48% | Ted Cruz | 37% | 11 | 662 | ± 3.75% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| GBA Strategies | August 21–28, 2016 | Hillary Clinton | 46% | Donald Trump | 40% | Gary Johnson | 10% | 6 | 1,200 | ± 4.4% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 45% | Donald Trump | 36% | Gary Johnson | 13% | 9 | 300 | ± 5.66% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Quinnipiac University | August 29 – September 7, 2016 | Hillary Clinton | 44% | Donald Trump | 39% | Gary Johnson | 9% | Jill Stein | 3% | 5 | 778 | ± 3.5% |
| CBS News/YouGov | August 30 – September 2, 2016 | Hillary Clinton | 45% | Donald Trump | 37% | Gary Johnson | 6% | Jill Stein | 2% | 8 | 1,091 | ± 4.1% |
| Monmouth University | August 26–29, 2016 | Hillary Clinton | 48% | Donald Trump | 40% | Gary Johnson | 6% | Jill Stein | 1% | 8 | 402 | ± 4.9% |
| Franklin & Marshall College | August 25–29, 2016 | Hillary Clinton | 41% | Donald Trump | 38% | Gary Johnson | 7% | Jill Stein | 2% | 3 | 736 | ± 4.6% |
| Emerson College | August 25–28, 2016 | Hillary Clinton | 46% | Donald Trump | 43% | Gary Johnson | 7% | Jill Stein | 2% | 3 | 800 | ± 3.4% |
| NBC News/Wall Street Journal/Marist | August 3–7, 2016 | Hillary Clinton | 45% | Donald Trump | 36% | Gary Johnson | 9% | Jill Stein | 3% | 9 | 834 | ± 3.1% |
| Quinnipiac University | July 30 – August 7, 2016 | Hillary Clinton | 48% | Donald Trump | 39% | Gary Johnson | 7% | Jill Stein | 3% | 9 | 815 | ± 3.4% |
| Susquehanna/ABC27 News | July 31 – August 4, 2016 | Hillary Clinton | 46% | Donald Trump | 37% | Gary Johnson | 7% | Jill Stein | 3% | 9 | 772 | ± 3.53% |
| Franklin & Marshall College | July 29 – August 2, 2016 | Hillary Clinton | 47% | Donald Trump | 34% | Gary Johnson | 7% | Jill Stein | 3% | 13 | 496 | ± 6.1% |
| Public Policy Polling | July 29–31, 2016 | Hillary Clinton | 45% | Donald Trump | 42% | Gary Johnson | 4% | Jill Stein | 2% | 3 | 1,505 | ± 2.5% |
| Suffolk University | July 25–27, 2016 | Hillary Clinton | 46% | Donald Trump | 37% | Gary Johnson | 5% | Jill Stein | 3% | 9 | 500 | ± 4.4% |
| Quinnipiac University | June 30 – July 11, 2016 | Hillary Clinton | 34% | Donald Trump | 40% | Gary Johnson | 9% | Jill Stein | 3% | 6 | 982 | ± 3.1% |
| NBC News/Wall Street Journal/Marist | July 5–10, 2016 | Hillary Clinton | 43% | Donald Trump | 35% | Gary Johnson | 8% | Jill Stein | 2% | 8 | 829 | ± 3.4% |
| Quinnipiac University | June 8–19, 2016 | Hillary Clinton | 39% | Donald Trump | 36% | Gary Johnson | 9% | Jill Stein | 4% | 3 | 950 | ± 3.2% |
| Public Policy Polling | June 3–5, 2016 | Hillary Clinton | 41% | Donald Trump | 40% | Gary Johnson | 6% | Jill Stein | 3% | 1 | 1,106 | ± 3.0% |
| Public Policy Polling | June 3–5, 2016 | Bernie Sanders | 45% | Donald Trump | 36% | Gary Johnson | 5% | Jill Stein | 1% | 9 | 1,106 | ± 3.0% |

## South Carolina

9 electoral votes (Republican in 2008) 54%–45% (Republican in 2012) 55%–44%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Feldman | August 18–21, 2016 | Hillary Clinton | 43% | Donald Trump | 45% | 2 | 600 | ± 4% |
| Gravis Marketing | August 15–17, 2016 | Hillary Clinton | 42% | Donald Trump | 46% | 4 | 768 | ± 3.5% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| First Tuesday Strategies | August 30 – September 2, 2016 | Hillary Clinton | 38% | Donald Trump | 50% | Gary Johnson | 3% | Jill Stein | 1% | 12 | 775 | ± 3.5% |
| Feldman | August 18–21, 2016 | Hillary Clinton | 39% | Donald Trump | 39% | Gary Johnson | 5% | Jill Stein | 1% | Tied | 600 | ± 4% |
| Gravis Marketing | August 15–17, 2016 | Hillary Clinton | 37% | Donald Trump | 41% | Gary Johnson | 7% | Jill Stein | 3% | 4 | 768 | ± 3.5% |
| Public Policy Polling | August 9–10, 2016 | Hillary Clinton | 39% | Donald Trump | 41% | Gary Johnson | 5% | Jill Stein | 2% | 2 | 1,290 | ± 2.7% |

## Tennessee

11 electoral votes (Republican in 2008) 57%–42% (Republican in 2012) 59%–39%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| iCitizen | July 25–27, 2016 | Hillary Clinton | 33% | Donald Trump | 49% | 16 | 655 | ± N/A% |
| Vanderbilt University/PSRA | April 25 – May 11, 2016 | Hillary Clinton | 35% | Donald Trump | 44% | 9 | 1,001 | ± 4.2% |
| Vanderbilt University/PSRA | April 25 – May 11, 2016 | Hillary Clinton | 34% | Ted Cruz | 44% | 10 | 1,001 | ± 4.2% |

## Texas

38 electoral votes (Republican in 2008) 55%–44% (Republican in 2012) 57%–41%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 12–14, 2016 | Hillary Clinton | 44% | Donald Trump | 50% | 6 | 944 | ± 3.2% |
| KTVT-CBS 11/Dixie Strategies Poll | August 8–9, 2016 | Hillary Clinton | 35% | Donald Trump | 46% | 11 | 1,018 | ± 3.1% |
| Texas Tribune/YouGov | June 10–19, 2016 | Hillary Clinton | 33% | Donald Trump | 41% | 8 | 1,200 | ± 2.83% |
| SurveyUSA | February 21–22, 2016 | Hillary Clinton | 44% | Donald Trump | 47% | 3 | 1,289 | ± 3% |
| SurveyUSA | February 21–22, 2016 | Bernie Sanders | 44% | Donald Trump | 47% | 3 | 1,289 | ± 3% |
| SurveyUSA | February 21–22, 2016 | Hillary Clinton | 42% | Ted Cruz | 50% | 8 | 1,289 | ± 3% |
| SurveyUSA | February 21–22, 2016 | Bernie Sanders | 41% | Ted Cruz | 50% | 9 | 1,289 | ± 3% |
| SurveyUSA | February 21–22, 2016 | Hillary Clinton | 41% | Marco Rubio | 51% | 10 | 1,289 | ± 3% |
| SurveyUSA | February 21–22, 2016 | Bernie Sanders | 40% | Marco Rubio | 50% | 10 | 1,289 | ± 3% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| Texas Tribune/YouGov | June 10–20, 2016 | Hillary Clinton | 32% | Donald Trump | 39% | Gary Johnson | 7% | 7 | 1,200 | ± 2.83% |
| Leland Beatty | June 13–14, 2016 | Hillary Clinton | 30% | Donald Trump | 37% | Gary Johnson | 3% | 7 | 998 | ± 3.1% |
Five-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Independent | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 12–14, 2016 | Hillary Clinton | 38% | Donald Trump | 44% | Gary Johnson | 6% | Jill Stein | 2% | Evan McMullin | 0% | 6 | 944 | ± 3.2% |

## Utah

6 electoral votes (Republican in 2008) 62%–34% (Republican in 2012) 73%–25%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 19–21, 2016 | Hillary Clinton | 33% | Donald Trump | 53% | 20 | 1,018 | ± 3.1% |
| Gravis Marketing | May 31 – June 1, 2016 | Hillary Clinton | 29% | Donald Trump | 36% | 7 | 1,519 | ± 2.5% |
| Dan Jones & Associates | May 2–10, 2016 | Hillary Clinton | 30% | Donald Trump | 43% | 13 | 588 | ± 4.04% |
| Dan Jones & Associates | May 2–10, 2016 | Bernie Sanders | 37% | Donald Trump | 43% | 6 | 588 | ± 4.04% |
| Dan Jones & Associates | March 23 – April 5, 2016 | Hillary Clinton | 38% | Donald Trump | 38% | Tied | 600 | ± 4.0% |
| Dan Jones & Associates | March 23 – April 5, 2016 | Hillary Clinton | 26% | Ted Cruz | 67% | 41 | 600 | ± 4.0% |
| Dan Jones & Associates | March 23 – April 5, 2016 | Hillary Clinton | 23% | John Kasich | 68% | 45 | 600 | ± 4.0% |
| Dan Jones & Associates | March 23 – April 5, 2016 | Bernie Sanders | 49% | Donald Trump | 35% | 14 | 600 | ± 4.0% |
| Dan Jones & Associates | March 23 – April 5, 2016 | Bernie Sanders | 32% | Ted Cruz | 63% | 31 | 600 | ± 4.0% |
| Dan Jones & Associates | March 23 – April 5, 2016 | Bernie Sanders | 30% | John Kasich | 64% | 34 | 600 | ± 4.0% |
| Dan Jones & Associates | March 8–15, 2016 | Hillary Clinton | 38% | Donald Trump | 36% | 2 | 500 | ± 4.38% |
| Dan Jones & Associates | March 8–15, 2016 | Hillary Clinton | 32% | Ted Cruz | 60% | 28 | 500 | ± 4.38% |
| Dan Jones & Associates | March 8–15, 2016 | Hillary Clinton | 29% | John Kasich | 59% | 30 | 500 | ± 4.38% |
| Dan Jones & Associates | March 8–15, 2016 | Bernie Sanders | 48% | Donald Trump | 37% | 11 | 500 | ± 4.38% |
| Dan Jones & Associates | March 8–15, 2016 | Bernie Sanders | 39% | Ted Cruz | 53% | 14 | 500 | ± 4.38% |
| Dan Jones & Associates | March 8–15, 2016 | Bernie Sanders | 35% | John Kasich | 54% | 19 | 500 | ± 4.38% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| SurveyUSA/Salt Lake Tribune | June 2–8, 2016 | Hillary Clinton | 35% | Donald Trump | 35% | Gary Johnson | 13% | Tied | 1,238 | ± 2.8% |
| SurveyUSA/Salt Lake Tribune | June 2–8, 2016 | Bernie Sanders | 37% | Donald Trump | 35% | Gary Johnson | 12% | 2 | 1,238 | ± 2.8% |
| Gravis Marketing | May 31 – June 1, 2016 | Hillary Clinton | 26% | Donald Trump | 29% | Gary Johnson | 16% | 3 | 1,519 | ± 2.5% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Dan Jones & Associates | July 18 – August 4, 2016 | Hillary Clinton | 25% | Donald Trump | 37% | Gary Johnson | 16% | Jill Stein | 1% | 12 | 858 | ± 3.34% |
| Dan Jones & Associates | June 8–17, 2016 | Hillary Clinton | 27% | Donald Trump | 36% | Gary Johnson | 10% | Jill Stein | 2% | 9 | 614 | ± 3.95% |
Six-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Constitution | % | Independent | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 19–21, 2016 | Hillary Clinton | 24% | Donald Trump | 39% | Gary Johnson | 12% | Jill Stein | 5% | Darrell Castle | 2% | Evan McMullin | 9% | 15 | 1,018 | ± 3.1% |

## Vermont

3 electoral votes (Democratic in 2008) 67%–30% (Democratic in 2012) 67%–31%
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| VPR | July 11–23, 2016 | Hillary Clinton | 39% | Donald Trump | 17% | Gary Johnson | 5% | 22 | 637 | ±3.9% |
| FM3 Research | June 27 – July 1, 2016 | Hillary Clinton | 39% | Donald Trump | 24% | Gary Johnson | 10% | 15 | 600 | ± ?% |

## Virginia

13 electoral votes (Democratic in 2008) 53%–46% (Democratic in 2012) 51%–47%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Hampton University | August 24–28, 2016 | Hillary Clinton | 43% | Donald Trump | 41% | 2 | 801 | ± 4.7% |
| Roanoke College | August 7–17, 2016 | Hillary Clinton | 55% | Donald Trump | 36% | 19 | 803 | ± 3.5% |
| Quinnipiac University | August 9–16, 2016 | Hillary Clinton | 50% | Donald Trump | 38% | 12 | 808 | ± 3.5% |
| Washington Post | August 11–14, 2016 | Hillary Clinton | 51% | Donald Trump | 43% | 8 | 707 | ± 4.5% |
| NBC News/Wall Street Journal/Marist | August 4–10, 2016 | Hillary Clinton | 46% | Donald Trump | 33% | 13 | 897 | ± 3.3% |
| RABA Research | July 26–27, 2016 | Hillary Clinton | 42% | Donald Trump | 46% | 4 | 655 | ± 3.8% |
| Fox News | July 9–12, 2016 | Hillary Clinton | 44% | Donald Trump | 37% | 7 | 601 | ± 4.0% |
| NBC News/Wall Street Journal/Marist | July 5–11, 2016 | Hillary Clinton | 44% | Donald Trump | 35% | 9 | 876 | ± 3.3% |
| Hampton University | July 6–10, 2016 | Hillary Clinton | 39% | Donald Trump | 39% | Tied | 805 | ± 4.6% |
| Public Policy Polling | June 13–15, 2016 | Hillary Clinton | 48% | Donald Trump | 45% | 3 | 1,032 | ± 3.1% |
| Gravis Marketing | May 24, 2016 | Hillary Clinton | 45% | Donald Trump | 41% | 4 | 1,728 | ± 2% |
| Roanoke College | May 9–17, 2016 | Hillary Clinton | 38% | Donald Trump | 38% | Tied | 610 | ± 4.0% |
| Christopher Newport University | March 23 – April 3, 2016 | Hillary Clinton | 44% | Donald Trump | 35% | 9 | 1,167 | ± 3.1% |
| Roanoke College | January 18–26, 2016 | Hillary Clinton | 52% | Donald Trump | 35% | 17 | 524 | ± 4.3% |
| Roanoke College | January 18–26, 2016 | Hillary Clinton | 46% | Marco Rubio | 43% | 3 | 524 | ± 4.3% |
| Roanoke College | January 18–26, 2016 | Hillary Clinton | 45% | Ted Cruz | 41% | 4 | 524 | ± 4.3% |
| Roanoke College | January 18–26, 2016 | Bernie Sanders | 55% | Donald Trump | 33% | 22 | 524 | ± 4.3% |
| Roanoke College | January 18–26, 2016 | Bernie Sanders | 48% | Marco Rubio | 38% | 10 | 524 | ± 4.3% |
| Roanoke College | January 18–26, 2016 | Bernie Sanders | 49% | Ted Cruz | 37% | 12 | 524 | ± 4.3% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Independent/ Third-party candidate | % | Lead margin | Sample size | Margin of error |
| CBS News/YouGov | August 2–5, 2016 | Hillary Clinton | 49% | Donald Trump | 37% | Gary Johnson | 7% | 12 | 1,181 | ± 3.7% |
| Gravis Marketing | May 24, 2016 | Hillary Clinton | 44% | Donald Trump | 38% | Gary Johnson | 6% | 6 | 1,728 | ± 2% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Emerson College | August 30 – September 1, 2016 | Hillary Clinton | 44% | Donald Trump | 43% | Gary Johnson | 11% | Jill Stein | 3% | 1 | 800 | ± 3.4% |
| Roanoke College | August 7–17, 2016 | Hillary Clinton | 48% | Donald Trump | 32% | Gary Johnson | 8% | Jill Stein | 3% | 16 | 803 | ± 3.5% |
| Quinnipiac University | August 9–16, 2016 | Hillary Clinton | 45% | Donald Trump | 34% | Gary Johnson | 11% | Jill Stein | 5% | 11 | 808 | ± 3.5% |
| Washington Post | August 11–14, 2016 | Hillary Clinton | 46% | Donald Trump | 39% | Gary Johnson | 9% | Jill Stein | 3% | 7 | 707 | ± 4.5% |
| NBC News/Wall Street Journal/Marist | August 4–10, 2016 | Hillary Clinton | 43% | Donald Trump | 31% | Gary Johnson | 9% | Jill Stein | 5% | 12 | 897 | ± 3.3% |
| Fox News | July 9–12, 2016 | Hillary Clinton | 39% | Donald Trump | 34% | Gary Johnson | 10% | Jill Stein | 4% | 5 | 601 | ± 4.0% |
| NBC News/Wall Street Journal/Marist | July 5–11, 2016 | Hillary Clinton | 41% | Donald Trump | 34% | Gary Johnson | 10% | Jill Stein | 2% | 7 | 876 | ± 3.3% |
| Public Policy Polling | June 13–15, 2016 | Hillary Clinton | 42% | Donald Trump | 39% | Gary Johnson | 6% | Jill Stein | 2% | 3 | 1,032 | ± 3.1% |

## Washington

12 electoral votes (Democratic in 2008) 57%–40% (Democratic in 2012) 56%–41%
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Elway Poll | August 9–13, 2016 | Hillary Clinton | 43% | Donald Trump | 24% | Gary Johnson | 7% | Jill Stein | 4% | 19 | 500 | ± 4.5% |

## West Virginia

5 electoral votes (Republican in 2008) 56%–43% (Republican in 2012) 62%–36%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | April 29 – May 1, 2016 | Hillary Clinton | 30% | Donald Trump | 57% | 27 | 1,201 | ± 2.8% |
| Public Policy Polling | April 29 – May 1, 2016 | Hillary Clinton | 31% | Ted Cruz | 44% | 13 | 1,201 | ± 2.8% |
| Public Policy Polling | April 29 – May 1, 2016 | Hillary Clinton | 27% | John Kasich | 52% | 25 | 1,201 | ± 2.8% |
| Public Policy Polling | April 29 – May 1, 2016 | Bernie Sanders | 35% | Donald Trump | 56% | 21 | 1,201 | ± 2.8% |
| Public Policy Polling | April 29 – May 1, 2016 | Bernie Sanders | 39% | Ted Cruz | 40% | 1 | 1,201 | ± 2.8% |
| Public Policy Polling | April 29 – May 1, 2016 | Bernie Sanders | 31% | John Kasich | 48% | 17 | 1,201 | ± 2.8% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green Party | % | Lead margin | Sample size | Margin of error |
| Repass Research | August 9–28, 2016 | Hillary Clinton | 31% | Donald Trump | 49% | Gary Johnson | 10% | Jill Stein | 4% | 18 | 386 | 4.7% |

## Wisconsin

10 electoral votes (Democratic in 2008) 56%–42% (Democratic in 2012) 53%–46%
| Poll source | Date administered | Democrat | % | Republican | % | Lead margin | Sample size | Margin of error |
| Public Policy Polling | August 26–27, 2016 | Hillary Clinton | 48% | Donald Trump | 41% | 7 | 1,054 | |
| Marquette University | August 25–28, 2016 | Hillary Clinton | 45% | Donald Trump | 42% | 3 | 615 | ± 5.0% |
| Marquette University | August 4–7, 2016 | Hillary Clinton | 46% | Donald Trump | 36% | 10 | 805 | ± 4.6% |
| Marquette University | July 7–10, 2016 | Hillary Clinton | 45% | Donald Trump | 41% | 4 | 629 | ± 4.5% |
| Public Policy Polling | June 22–23, 2016 | Hillary Clinton | 47% | Donald Trump | 39% | 8 | 843 | ± 3.4% |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 47% | Donald Trump | 36% | 11 | 300 | ± 5.66% |
| Marquette University | June 9–12, 2016 | Hillary Clinton | 46% | Donald Trump | 37% | 9 | 666 | ± 4.9% |
| Marquette University | June 9–12, 2016 | Bernie Sanders | 57% | Donald Trump | 33% | 24 | 666 | ± 4.9% |
| Public Opinion Strategies | May 10–12, 2016 | Hillary Clinton | 43% | Donald Trump | 31% | 12 | 600 | ± 4.0% |
| St. Norbert College/WPR/WPT | April 12–15, 2016 | Hillary Clinton | 46% | Donald Trump | 34% | 12 | 616 | ± 4% |
| St. Norbert College/WPR/WPT | April 12–15, 2016 | Hillary Clinton | 45% | Ted Cruz | 44% | 1 | 616 | ± 4% |
| St. Norbert College/WPR/WPT | April 12–15, 2016 | Bernie Sanders | 52% | Donald Trump | 33% | 19 | 616 | ± 4% |
| St. Norbert College/WPR/WPT | April 12–15, 2016 | Bernie Sanders | 50% | Ted Cruz | 40% | 10 | 616 | ± 4% |
| Emerson College | March 30 – April 3, 2016 | Hillary Clinton | 47% | Donald Trump | 37% | 10 | 1,198 | ± 2.8% |
| Emerson College | March 30 – April 3, 2016 | Hillary Clinton | 46% | Ted Cruz | 43% | 3 | 1,198 | ± 2.8% |
| Emerson College | March 30 – April 3, 2016 | Hillary Clinton | 38% | John Kasich | 52% | 14 | 1,198 | ± 2.8% |
| Emerson College | March 30 – April 3, 2016 | Bernie Sanders | 51% | Donald Trump | 37% | 14 | 1,198 | ± 2.8% |
| Emerson College | March 30 – April 3, 2016 | Bernie Sanders | 50% | Ted Cruz | 41% | 9 | 1,198 | ± 2.8% |
| Fox News | March 28–30, 2016 | Hillary Clinton | 49% | Donald Trump | 35% | 14 | 1,602 | ± 2.5% |
| Marquette University | March 24–28, 2016 | Hillary Clinton | 47% | Donald Trump | 37% | 10 | 1,405 | ± 3.3% |
| Marquette University | March 24–28, 2016 | Hillary Clinton | 44% | Ted Cruz | 44% | Tied | 1,405 | ± 3.3% |
| Marquette University | March 24–28, 2016 | Hillary Clinton | 39% | John Kasich | 48% | 9 | 1,405 | ± 3.3% |
| Marquette University | March 24–28, 2016 | Bernie Sanders | 54% | Donald Trump | 35% | 19 | 1,405 | ± 3.3% |
| Marquette University | March 24–28, 2016 | Bernie Sanders | 52% | Ted Cruz | 39% | 13 | 1,405 | ± 3.3% |
| Marquette University | March 24–28, 2016 | Bernie Sanders | 46% | John Kasich | 44% | 2 | 1,405 | ± 3.3% |
| Emerson College | March 20–22, 2016 | Hillary Clinton | 47% | Donald Trump | 38% | 9 | 922 | ± 3.2% |
| Emerson College | March 20–22, 2016 | Hillary Clinton | 46% | Ted Cruz | 45% | 1 | 922 | ± 3.2% |
| Emerson College | March 20–22, 2016 | Bernie Sanders | 47% | Donald Trump | 39% | 9 | 922 | ± 3.2% |
| Marquette University | February 18–21, 2016 | Hillary Clinton | 47% | Donald Trump | 37% | 10 | 802 | ± 4.5% |
| Marquette University | February 18–21, 2016 | Hillary Clinton | 43% | Ted Cruz | 43% | Tied | 802 | ± 4.5% |
| Marquette University | February 18–21, 2016 | Hillary Clinton | 44% | Marco Rubio | 43% | 1 | 802 | ± 4.5% |
| Marquette University | February 18–21, 2016 | Bernie Sanders | 54% | Donald Trump | 34% | 20 | 802 | ± 4.5% |
| Marquette University | February 18–21, 2016 | Bernie Sanders | 53% | Ted Cruz | 35% | 18 | 802 | ± 4.5% |
| Marquette University | February 18–21, 2016 | Bernie Sanders | 53% | Marco Rubio | 35% | 18 | 802 | ± 4.5% |
| Marquette University | January 21–24, 2016 | Hillary Clinton | 47% | Donald Trump | 38% | 9 | 806 | ± 4.0% |
| Marquette University | January 21–24, 2016 | Hillary Clinton | 45% | Marco Rubio | 44% | 1 | 806 | ± 4.0% |
| Marquette University | January 21–24, 2016 | Hillary Clinton | 45% | Ted Cruz | 44% | 1 | 806 | ± 4.0% |
| Marquette University | January 21–24, 2016 | Bernie Sanders | 52% | Donald Trump | 34% | 18 | 806 | ± 4.0% |
| Marquette University | January 21–24, 2016 | Bernie Sanders | 49% | Marco Rubio | 38% | 11 | 806 | ± 4.0% |
| Marquette University | January 21–24, 2016 | Bernie Sanders | 50% | Ted Cruz | 38% | 12 | 806 | ± 4.0% |
Three-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Lead margin | Sample size | Margin of error |
| Greenberg Quinlan Rosner | June 11–20, 2016 | Hillary Clinton | 44% | Donald Trump | 32% | Gary Johnson | 16% | 12 | 300 | ± 5.66% |
Four-way race
| Poll source | Date administered | Democrat | % | Republican | % | Libertarian | % | Green | % | Lead margin | Sample size | Margin of error |
| Monmouth University | August 27–30, 2016 | Hillary Clinton | 43% | Donald Trump | 38% | Gary Johnson | 7% | Jill Stein | 3% | 5 | 404 | ± 4.9% |
| Marquette University | August 25–28, 2016 | Hillary Clinton | 41% | Donald Trump | 38% | Gary Johnson | 10% | Jill Stein | 4% | 3 | 615 | ± 5.0% |
| Marquette University | August 4–7, 2016 | Hillary Clinton | 42% | Donald Trump | 33% | Gary Johnson | 10% | Jill Stein | 4% | 9 | 805 | ± 4.6% |
| Marquette University | July 7–10, 2016 | Hillary Clinton | 43% | Donald Trump | 37% | Gary Johnson | 8% | Jill Stein | 2% | 6 | 629 | ± 4.5% |
| CBS News/YouGov | June 21–24, 2016 | Hillary Clinton | 41% | Donald Trump | 36% | Gary Johnson | 3% | Jill Stein | 2% | 5 | 993 | ± 4.3% |