# Statewide opinion polling for the February 2012 Republican Party presidential primaries

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This article contains opinion polling by U.S. state for the 2012 Republican Party presidential primaries.
As of May 2012, both Ron Paul and Mitt Romney have led polls in multiple states. They have both also reached at least 20 percent in polls in multiple states. Before announcing that they would not run, Mike Huckabee and Sarah Palin were also leading polls in multiple states with numbers above 20 percent. Michele Bachmann, Herman Cain, Rick Perry, and Rick Santorum were also able to lead polls in multiple states earlier in the race, but Cain suspended his campaign on December 3 after multiple allegations of sexual impropriety, Bachmann dropped out on January 4, one day after her poor showing in the Iowa caucuses, in which she came in sixth place and received just 5 percent of the vote, Perry dropped out on January 19 after finishing fifth in Iowa with just over 10 percent of the vote, finishing sixth in New Hampshire with less than 1 percent of the vote and with "lagging" poll numbers ahead of the South Carolina primary, and Santorum suspended his campaign on April 10. Newt Gingrich announced he would drop out of the race after a poor showing in the northeast on April 24.
Haley Barbour of Mississippi, Jeb Bush of Florida, Chris Christie of New Jersey, Jim DeMint of South Carolina, Bobby Jindal of Louisiana, Tim Pawlenty of Minnesota, Paul Ryan of Wisconsin and John Thune of South Dakota all succeeded in leading polls in their home states at some point in 2011, although only Pawlenty actually launched a campaign. Pawlenty exited the race on August 14, one day after finishing third in Iowa's Ames Straw Poll, citing a lack of campaign funds.

## Polling for completed primaries
### Nevada (February 4)

Winner: Mitt Romney Caucus date: February 4, 2012 Delegates: 28
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Caucus results Turnout: 32,963 | Feb. 4, 2012 | Mitt Romney 50.1% | Newt Gingrich 21.1% | Ron Paul 18.8% | Rick Santorum 10.0% |
| Public Policy Polling Margin of error: ±3.2% Sample size: 937 LCV | Feb. 1–2, 2012 | Mitt Romney 50% | Newt Gingrich 25% | Ron Paul 15% | Rick Santorum 8%, Not sure/Someone else 1% |
| Las Vegas Review-Journal/University of Nevada Margin of error: ±4.75% Sample size: 426 LV | Feb. 1, 2012 | Mitt Romney 45% | Newt Gingrich 25% | Rick Santorum 11% | Ron Paul 9%, Undecided 9% |
| 2012NevadaCaucus.com Margin of error: ±5% Sample size: 300 | Jan. 31-Feb. 1, 2012 | Mitt Romney 34% | Ron Paul 24% | Newt Gingrich 14% | Rick Santorum 9%, Undecided 19% |
| Public Policy Polling Margin of error: ±4.6% Sample size: 450 | Oct. 20–23, 2011 | Mitt Romney 29% | Herman Cain 28% | Newt Gingrich 15% | Ron Paul 7%, Rick Perry 6%, Michele Bachmann 3%, Jon Huntsman 2%, Rick Santorum 2%, Gary Johnson 0%, someone else/undecided 9% |
| Public Policy Polling Margin of error: ±4.6% Sample size: 450 | Oct. 20–23, 2011 | Mitt Romney 65% | Rick Perry 20% | – | not sure 15% |
| Public Policy Polling Margin of error: ±4.6% Sample size: 450 | Oct. 20–23, 2011 | Mitt Romney 48% | Herman Cain 40% | – | not sure 13% |
| Public Policy Polling Margin of error: ±4.6% Sample size: 450 | Oct. 20–23, 2011 | Herman Cain 60% | Rick Perry 22% | – | not sure 17% |
| Magellan Strategies Margin of error: ±3.77% Sample size: 673 | Oct. 19–20, 2011 | Mitt Romney 38% | Herman Cain 26% | Newt Gingrich 16% | Ron Paul 7%, Rick Perry 5%, Michele Bachmann 2%, Jon Huntsman 1%, Rick Santorum 1%, Other candidate 1%, Undecided 3% |
| Project New West Margin of error: ±7.1% Sample size: 190 | Sep. 25–27, 2011 | Mitt Romney 31% | Herman Cain 26% | Rick Perry 12% | Newt Gingrich 7%, Ron Paul 7%, Michele Bachmann 4%, Rick Santorum 2%, Jon Huntsman 1%, Other candidate 3%, Undecided 7% |
| Magellan Strategies Margin of error: ±3.9% Sample size: 631 | Aug. 29, 31, 2011 | Rick Perry 29% | Mitt Romney 24% | Herman Cain 7% | Michele Bachmann 6%, Ron Paul 6%, Newt Gingrich 5%, Jon Huntsman 1%, Rick Santorum 1%, Other candidate 2%, Undecided 19% |
| Public Policy Polling Margin of error: ±3.6% Sample size: 732 | Jul. 28–31, 2011 | Mitt Romney 31% | Rick Perry 18% | Michele Bachmann 10% | Sarah Palin 10%, Ron Paul 9%, Herman Cain 7%, Newt Gingrich 6%, Tim Pawlenty 1%, Jon Huntsman 1%, Someone else/undecided 6% |
| Public Policy Polling Margin of error: ±3.6% Sample size: 732 | Jul. 28–31, 2011 | Mitt Romney 31% | Rick Perry 18% | Michele Bachmann 14% | Ron Paul 11%, Herman Cain 8%, Newt Gingrich 8%, Jon Huntsman 2%, Tim Pawlenty 1%, Someone else/undecided 7% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 300 | Apr. 21–24, 2011 | Mitt Romney 24% | Donald Trump 16% | Newt Gingrich 11% | Mike Huckabee 10%, Sarah Palin 8%, Tim Pawlenty 8%, Michele Bachmann 7%, Ron Paul 5%, someone else/undecided 12% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 300 | Apr. 21–24, 2011 | Mitt Romney 29% | Newt Gingrich 17% | Sarah Palin 12% | Michele Bachmann 9%, Mike Huckabee 9%, Ron Paul 7%, Tim Pawlenty 7%, someone else/undecided 9% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 300 | Apr. 21–24, 2011 | Mitt Romney 33% | Newt Gingrich 18% | Sarah Palin 14% | Michele Bachmann 11%, Tim Pawlenty 9%, Ron Paul 6%, someone else/undecided 8% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 300 | Apr. 21–24, 2011 | Mitt Romney 31% | Newt Gingrich 16% | Mike Huckabee 15% | Michele Bachmann 11%, Tim Pawlenty 10%, Ron Paul 8%, someone else/undecided 9% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 300 | Apr. 21–24, 2011 | Mitt Romney 38% | Newt Gingrich 21% | Michele Bachmann 14% | Ron Paul 10%, Tim Pawlenty 8%, someone else/undecided 10% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jan. 3–5, 2011 | Mitt Romney 31% | Sarah Palin 19% | Newt Gingrich 18% | Mike Huckabee 14%, Ron Paul 7%, Mitch Daniels 1%, Tim Pawlenty 1%, John Thune 1%, someone else/undecided 8% |
| Public Policy Polling Margin of error: ±5.9% Sample size: 272 | Oct. 30–31, 2010 | Mitt Romney 34% | Newt Gingrich 21% | Sarah Palin 16% | Mike Huckabee 11%, Tim Pawlenty 2%, Mitch Daniels 1%, Mike Pence 1%, John Thune 0%, someone else/undecided 13% |
| Public Policy Polling Margin of error: ±5.0% Sample size: 400 | Jul. 16–18, 2010 | Mitt Romney 34% | Newt Gingrich 28% | Sarah Palin 16% | Mike Huckabee 11%, Ron Paul 7%, undecided 5% |

### Colorado (February 7)

Winner: Rick Santorum Caucus date: February 7, 2012 Delegates: 36
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Caucus results Turnout: 66,091 | Feb. 7, 2012 | Rick Santorum 40.3% | Mitt Romney 34.9% | Newt Gingrich 12.8% | Ron Paul 11.8%, Rick Perry 0.1%, Jon Huntsman 0.1%, Michele Bachmann 0.0%, Others 0.1% |
| Public Policy Polling Margin of error: ±3.2% Sample size: 938 | Feb. 4–6, 2012 | Mitt Romney 37% | Rick Santorum 27% | Newt Gingrich 21% | Ron Paul 13%, Someone else/Not sure 2% |
| Public Policy Polling Margin of error: ±4.3% Sample size: 527 | Feb. 4, 2012 | Mitt Romney 40% | Rick Santorum 26% | Newt Gingrich 18% | Ron Paul 12%, Someone else/Not sure 3% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 500 | Dec. 1–4, 2011 | Newt Gingrich 37% | Mitt Romney 18% | Michele Bachmann 9% | Ron Paul 6%, Rick Perry 4%, Rick Santorum 4%, Jon Huntsman 3%, Gary Johnson 1%, Undecided 16% |
| Project New West/Keating Research Margin of error: ±7.2% Sample size: – | Sep. 19–22, 2011 | Mitt Romney 24% | Rick Perry 20% | Michele Bachmann 7% | Newt Gingrich 7%, Herman Cain 5%, undecided 19% |
| Public Policy Polling Margin of error: ±5.5% Sample size: 314 | Aug. 4–7, 2011 | Rick Perry 20% | Mitt Romney 20% | Michele Bachmann 12% | Sarah Palin 11%, Ron Paul 8%, Herman Cain 7%, Newt Gingrich 6%, Tim Pawlenty 3%, Jon Huntsman 2%, someone else/undecided 11% |
| Public Policy Polling Margin of error: ±5.5% Sample size: 314 | Aug. 4–7, 2011 | Mitt Romney 22% | Rick Perry 21% | Michele Bachmann 15% | Newt Gingrich 9%, Ron Paul 7%, Tim Pawlenty 6%, Herman Cain 5%, Jon Huntsman 2%, someone else/undecided 13% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Feb. 4–6, 2011 | Mitt Romney 19% | Mike Huckabee 16% | Sarah Palin 16% | Newt Gingrich 12%, Ron Paul 9%, Tim Pawlenty 7%, John Thune 4%, Mitch Daniels 3%, someone else/undecided 16% |
| Public Policy Polling Margin of error: ±5.3% Sample size: 341 | Oct. 30–31, 2010 | Mitt Romney 22% | Newt Gingrich 17% | Sarah Palin 17% | Mike Huckabee 14%, Tim Pawlenty 6%, Mike Pence 3%, John Thune 2%, Mitch Daniels 1%, someone else/undecided 18% |
| Public Policy Polling Margin of error: ±4.6% Sample size: 448 | May 14–16, 2010 | Sarah Palin 29% | Mitt Romney 25% | Mike Huckabee 18% | Newt Gingrich 16%, Ron Paul 9%, undecided 3% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 497 | Mar. 5–8, 2010 | Mitt Romney 44% | Sarah Palin 25% | Mike Huckabee 17% | Undecided 14% |

### Minnesota (February 7)

Winner: Rick Santorum Caucus date: February 7, 2012 Delegates: 40
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Caucus results Turnout: 48,795 | Feb. 7, 2012 | Rick Santorum 44.9% | Ron Paul 27.1% | Mitt Romney 16.9% | Newt Gingrich 10.8%, Write in 0.3% |
| Public Policy Polling Margin of error: ±3.3% Sample size: 864 | Feb. 6, 2012 | Rick Santorum 33% | Mitt Romney 24% | Newt Gingrich 22% | Ron Paul 20% |
| Public Policy Polling Margin of error: ±4.8% Sample size: 410 | Feb. 4, 2012 | Rick Santorum 29% | Mitt Romney 27% | Newt Gingrich 22% | Ron Paul 19%, Someone else/Not sure 3% |
| Public Policy Polling Margin of error: ±5.6% Sample size: 303 | Jan. 21–22, 2012 | Newt Gingrich 36% | Mitt Romney 18% | Rick Santorum 17% | Ron Paul 13%, Someone else/Not sure 15% |
| Public Policy Polling Margin of error: ±5.6% Sample size: 303 | Jan. 21–22, 2012 | Newt Gingrich 50% | Mitt Romney 29% | | Not sure 21% |
| Public Policy Polling Margin of error: ±5.6% Sample size: 303 | Jan. 21–22, 2012 | Mitt Romney 51% | Ron Paul 29% | | Not sure 20% |
| Public Policy Polling Margin of error: ±5.6% Sample size: 303 | Jan. 21–22, 2012 | Rick Santorum 46% | Mitt Romney 34% | | Not sure 20% |
| SurveyUSA/KSTP-TV Margin of error: ±4.2% Sample size: 558 | Jun. 15–17, 2011 | Mitt Romney 29% | Tim Pawlenty 23% | Michele Bachmann 13% | Ron Paul 13%, Herman Cain 4%, Newt Gingrich 3%, Rick Perry 2%, Jon Huntsman 1%, Rick Santorum 1%, Not sure 11% |
| Public Policy Polling Margin of error: ±5.1% Sample size: 371 | May 27–30, 2011 | Tim Pawlenty 33% | Michele Bachmann 14% | Sarah Palin 11% | Mitt Romney 11%, Herman Cain 10%, Ron Paul 9%, Newt Gingrich 4%, Jon Huntsman 2%, Someone else/Not Sure 6% |
| Public Policy Polling Margin of error: ±5.1% Sample size: 371 | May 27–30, 2011 | Tim Pawlenty 38% | Michele Bachmann 19% | Mitt Romney 11% | Herman Cain 10%, Ron Paul 9%, Newt Gingrich 5%, Jon Huntsman 1%, Someone else/Not Sure 7% |
| Public Policy Polling Margin of error: ±5.0% Sample size: 387 | Dec. 4–5, 2010 | Tim Pawlenty 24% | Sarah Palin 17% | Mike Huckabee 15% | Mitt Romney 13%, Newt Gingrich 11%, Ron Paul 9%, John Thune 3%, Mitch Daniels 2%, someone else/undecided 6% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 499 | Oct. 27–29, 2010 | Tim Pawlenty 19% | Sarah Palin 18% | Mike Huckabee 14% | Newt Gingrich 11%, Mitt Romney 11%, Mitch Daniels 3%, Mike Pence 3%, John Thune 2%, someone else/undecided 18% |
| MPR News-Humphrey Institute Poll Margin of error: ±5.3% Sample size: 750 | Aug. 25–29, 2010 | Mitt Romney 45% | Tim Pawlenty 32% | – | |
| MPR News-Humphrey Institute Poll Margin of error: ±5.3% Sample size: 750 | Aug. 25–29, 2010 | Tim Pawlenty 59% | Sarah Palin 24% | – | |

### Maine (February 4–11)

Caucus date: February 4–11, 2012 Delegates: 24 Note
    The Maine Republican Party released updated results on February 17th. Maine Senate President Kevin Raye stated that the final tally would be updated to include the results from the Washington County caucus held on February 18, but that the State Committee would vote on March 10 to determine if the other towns who voluntarily held their caucuses after the February 11 deadline would be included.
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Caucus results* Turnout: 5,585 | Feb. 4–11, 2012 | Mitt Romney 39.0% | Ron Paul 34.9% | Rick Santorum 18.1% | Newt Gingrich 6.7%, Others 1.2% |
| Public Policy Polling Margin of error: ±6.2% Sample size: 250 | Oct. 28–31, 2011 | Herman Cain 29% | Mitt Romney 24% | Newt Gingrich 18% | Michele Bachmann 5%, Ron Paul 5%, Rick Perry 4%, Rick Santorum 2%, Jon Huntsman 1%, Gary Johnson 1%, someone else/not sure 11% |
| Public Policy Polling Margin of error: ±4.7% Sample size: 434 | Mar. 3–6, 2011 | Newt Gingrich 19% | Mike Huckabee 19% | Sarah Palin 17% | Mitt Romney 15%, Ron Paul 8%, Mitch Daniels 4%, Tim Pawlenty 3%, Haley Barbour 2%, someone else/undecided 13% |
| Public Policy Polling Margin of error: ±4.0% Sample size: 614 | Oct. 26–28, 2010 | Sarah Palin 23% | Mitt Romney 18% | Mike Huckabee 16% | Newt Gingrich 14%, Tim Pawlenty 3%, Mike Pence 2%, Mitch Daniels 1%, John Thune 0%, someone else/undecided 23% |
| Public Policy Polling Margin of error: ±4.1% Sample size: 584 | Sep. 2–6, 2010 | Mitt Romney 27% | Sarah Palin 21% | Newt Gingrich 15% | Mike Huckabee 14%, Ron Paul 7%, someone else 8%, undecided 8% |

### Arizona (February 28)

Winner: Mitt Romney Primary date: February 28, 2012 Delegates: 29
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 458,631 | Feb. 28, 2012 | Mitt Romney 47.27% | Rick Santorum 26.62% | Newt Gingrich 16.16% | Ron Paul 8.45%, Rick Perry 0.41% Others 1.09% |
| We Ask America Margin of error: ±2.87% Sample size: 1,162 | Feb. 26, 2012 | Mitt Romney 42.66% | Rick Santorum 26.54% | Newt Gingrich 20.65% | Ron Paul 10.15% |
| Public Policy Polling Margin of error: ±4.3% Sample size: 515 | Feb. 26, 2012 | Mitt Romney 43% | Rick Santorum 26% | Newt Gingrich 18% | Ron Paul 11%, Someone else/Not sure 1% |
| America Research Group Margin of error: ±4% Sample size: 600 | Feb. 23–24, 2012 | Mitt Romney 39% | Rick Santorum 35% | Newt Gingrich 11% | Ron Paul 9%, Undecided 5% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 23, 2012 | Mitt Romney 42% | Rick Santorum 29% | Newt Gingrich 16% | Ron Paul 8%, Other 1%, Undecided 3% |
| We Ask America Margin of error: ±2.88% Sample size: 1,115 | Feb. 19–20, 2012 | Mitt Romney 37% | Rick Santorum 27% | Newt Gingrich 15% | Ron Paul 8%, Undecided 13% |
| NBC News-Marist Margin of error: ±3.5% Sample size: 2,487 | Feb. 19–20, 2012 | Mitt Romney 43% | Rick Santorum 27% | Newt Gingrich 16% | Ron Paul 11%, Undecided 3% |
| CNN/Time Magazine/ORC International Margin of error: ±4.5% Sample size: 467 | Feb. 17–20, 2012 | Mitt Romney 36% | Rick Santorum 32% | Newt Gingrich 18% | Ron Paul 6%, None/No one 1%, No opinion 6% |
| Public Policy Polling Margin of error: ±4.8% Sample size: 412 | Feb. 17–19, 2012 | Mitt Romney 36% | Rick Santorum 33% | Newt Gingrich 16% | Ron Paul 9%, Someone else/Not sure 7% |
| Public Policy Polling Margin of error: ±4.8% Sample size: 412 | Feb. 17–19, 2012 | Rick Santorum 43% | Mitt Romney 41% | Ron Paul 9% | Not sure 8% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 16, 2012 | Mitt Romney 39% | Rick Santorum 31% | Newt Gingrich 15% | Ron Paul 7%, Other 3%, Undecided 5% |
| America Research Group Margin of error: ±4% Sample size: 600 | Feb. 13–14, 2012 | Mitt Romney 38% | Rick Santorum 31% | Newt Gingrich 15% | Ron Paul 11%, Undecided 5% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 1, 2012 | Mitt Romney 48% | Newt Gingrich 24% | Rick Santorum 13% | Ron Paul 6%, Other 2%, Undecided 6% |
| America Research Group Margin of error: ±4% Sample size: 600 | Jan. 25–26, 2012 | Mitt Romney 32% | Newt Gingrich 32% | Ron Paul 12% | Rick Santorum 10%, Other 2%, Undecided 12% |
| Behavior Research Center Margin of error: ±7.1% Sample size: 260 | Jan. 5–9, 2012 | Mitt Romney 41% | Rick Santorum 14% | Newt Gingrich 9% | Rick Perry 5%, Ron Paul 4%, Jon Huntsman 2%, Undecided 25% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Nov. 17–20, 2011 | Newt Gingrich 28% | Mitt Romney 23% | Herman Cain 17% | Ron Paul 8%, Jon Huntsman 5%, Michele Bachmann 3%, Rick Perry 3%, Rick Santorum 3%, Gary Johnson 0%, someone else/not sure 9% |
| Behavior Research Center Margin of error: ±4.1% Sample size: 581 | Oct. 13–24, 2011 | Herman Cain 25% | Mitt Romney 24% | Rick Perry 10% | Ron Paul 5%, Michele Bachmann 4%, Jon Huntsman 2%, Rick Santorum 0%, None of the above 5%, undecided 20%, not interested 5% |
| Summit Consulting Group Margin of error: ±4% Sample size: 600 | Sep. 19–20, 2011 | Mitt Romney 31% | Rick Perry 25% | Michele Bachmann 5% | Herman Cain 5%, Newt Gingrich 4%, Ron Paul 3%, Jon Huntsman 2%, Rick Santorum 1%, undecided 24% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Apr. 28 – May 1, 2011 | Mitt Romney 24% | Mike Huckabee 12% | Sarah Palin 12% | Ron Paul 12%, Michele Bachmann 10%, Newt Gingrich 10%, Donald Trump 8%, Tim Pawlenty 5%, someone else/undecided 8% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jan. 28–30, 2011 | Mitt Romney 23% | Mike Huckabee 19% | Newt Gingrich 15% | Sarah Palin 15%, Ron Paul 5%, Tim Pawlenty 4%, Mitch Daniels 2%, John Thune 1%, someone else/undecided 16% |
| Magellan Strategies Margin of error: ±2.9% Sample size: 1,137 | Jun. 22, 2010 | Mitt Romney 29% | Sarah Palin 18% | Newt Gingrich 16% | Mike Huckabee 14%, Ron Paul 5%, Tim Pawlenty 3%, Rick Santorum 2%, undecided 13% |
| Public Policy Polling Margin of error: ±5.0% Sample size: 387 | Apr. 23–25, 2010 | Mitt Romney 27% | Newt Gingrich 19% | Sarah Palin 13% | Mike Huckabee 12%, Ron Paul 9%, undecided 19% |

### Michigan (February 28)

Winner: Mitt Romney Primary date: February 28, 2012 Delegates: 30
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 979,269 | Feb. 28, 2012 | Mitt Romney 41.07% | Rick Santorum 37.86% | Ron Paul 11.62% | Newt Gingrich 6.53%, Uncommitted 1.89%, Rick Perry 0.19%, Buddy Roemer 0.19%, Michele Bachmann 0.18%, Jon Huntsman 0.17%, Herman Cain 0.12%, Fred Karger 0.12%, Gary Johnson 0.05% |
| Public Policy Polling Margin of error: ±3.2% Sample size: 922 | Feb. 26–27, 2012 | Rick Santorum 38% | Mitt Romney 37% | Ron Paul 14% | Newt Gingrich 9%, Someone else/not sure 2% |
| American Research Group Margin of error: ±4% Sample size: 600 | Feb. 26, 2012 | Rick Santorum 36% | Mitt Romney 35% | Ron Paul 15% | Newt Gingrich 8%, Undecided 6% |
| Mitchell Research/Rosetta Stone Margin of error: ±3.3% Sample size: 858 | Feb. 26, 2012 | Rick Santorum 37% | Mitt Romney 35% | Newt Gingrich 9% | Ron Paul 8%, Undecided 10% |
| We Ask America Margin of error: ±3.12% Sample size: 984 | Feb. 26, 2012 | Mitt Romney 36.85% | Rick Santorum 32.53% | Ron Paul 18.08% | Newt Gingrich 12.53% |
| Public Policy Polling Margin of error: ±4.8% Sample size: 421 | Feb. 26, 2012 | Mitt Romney 39% | Rick Santorum 37% | Ron Paul 13% | Newt Gingrich 9%, Someone else/Not sure 2% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 26, 2012 | Mitt Romney 38% | Rick Santorum 36% | Ron Paul 11% | Newt Gingrich 10%, Undecided 5%, Other 1% |
| Foster McCollum White & Associates/Baydoun Consulting Margin of error: ±2.66% Sample size: 1,359 | Feb. 23, 2012 | Mitt Romney 37.90% | Rick Santorum 35.86% | Ron Paul 9.12% | Newt Gingrich 8.31%, Undecided 8.90% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 23, 2012 | Mitt Romney 40% | Rick Santorum 34% | Ron Paul 10% | Newt Gingrich 9%, Undecided 6%, Other 1% |
| Mitchell Research/Rosetta Stone Margin of error: ±4.7% Sample size: 430 | Feb. 23, 2012 | Mitt Romney 36% | Rick Santorum 33% | Ron Paul 12% | Newt Gingrich 9%, Undecided 11% |
| American Research Group Margin of error: ±4% Sample size: 600 | Feb. 21–22, 2012 | Rick Santorum 38% | Mitt Romney 34% | Ron Paul 12% | Newt Gingrich 7%, Other/Uncommitted 1%, Undecided 8% |
| WXYZ/Detroit Free Press Margin of error: ±4.9% Sample size: 400 | Feb. 18–21, 2012 | Rick Santorum 37% | Mitt Romney 34% | Ron Paul 10% | Newt Gingrich 7%, Undecided 12% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 20, 2012 | Rick Santorum 38% | Mitt Romney 34% | Ron Paul 10% | Newt Gingrich 9%, Other 1%, Undecided 8% |
| Mitchell Research/Rosetta Stone Margin of error: ±4.7% Sample size: 420 | Feb. 20, 2012 | Mitt Romney 32% | Rick Santorum 30% | Newt Gingrich 9% | Ron Paul 7%, Undecided 22% |
| NBC News-Marist Margin of error: ±1.8% Sample size: 3,149 | Feb. 19–20, 2012 | Mitt Romney 37% | Rick Santorum 35% | Ron Paul 13% | Newt Gingrich 8%, Other 1%, Undecided 4%, Uncommitted 2% |
| We Ask America Margin of error: ±3.06% Sample size: 1,025 | Feb. 19, 2012 | Rick Santorum 29% | Mitt Romney 29% | Ron Paul 12% | Newt Gingrich 10%, Undecided 20% |
| Public Policy Polling Margin of error: ±4.0% Sample size: 602 | Feb. 17–19, 2012 | Rick Santorum 37% | Mitt Romney 33% | Ron Paul 15% | Newt Gingrich 10%, Someone else/Not sure 6% |
| Foster McCollum White & Associates/Baydoun Consulting Margin of error: ±2.14% Sample size: 2,106 | Feb. 16, 2012 | Rick Santorum 37.37% | Mitt Romney 33.75% | Ron Paul 8.01% | Newt Gingrich 6.91%, Undecided 13.97% |
| American Research Group Margin of error: ±4% Sample size: 600 | Feb. 15–16, 2012 | Rick Santorum 37% | Mitt Romney 32% | Ron Paul 15% | Newt Gingrich 10%, Other 1%, Undecided 5% |
| Mitchell Research/Rosetta Stone Margin of error: ±4.6% Sample size: 455 | Feb. 14, 2012 | Rick Santorum 34% | Mitt Romney 25% | Ron Paul 11% | Newt Gingrich 5%, Someone else 4%, Undecided 25% |
| Marketing Research Group Margin of error: ±3.5% Sample size: 800 | Feb. 13–14, 2012 | Rick Santorum 43% | Mitt Romney 33% | Newt Gingrich 11% | Ron Paul 8%, Undecided 5% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 13, 2012 | Rick Santorum 35% | Mitt Romney 32% | Ron Paul 13% | Newt Gingrich 11%, Undecided 8% |
| Glengariff Group Margin of error: ±4.38% Sample size: 500 | Feb. 11–13, 2012 | Rick Santorum 34.0% | Mitt Romney 30.4% | Newt Gingrich 11.6% | Ron Paul 8.9%, Undecided 12.4% |
| American Research Group Margin of error: ±4% Sample size: 600 | Feb. 11–12, 2012 | Rick Santorum 33% | Mitt Romney 27% | Newt Gingrich 21% | Ron Paul 12%, Other 1%, Undecided 6% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 404 | Feb. 10–12, 2012 | Rick Santorum 39% | Mitt Romney 24% | Ron Paul 12% | Newt Gingrich 11%, Someone else/Not sure 13% |
| MIRS Margin of error: ±4% Sample size: 638 | Feb. 2, 2012 | Mitt Romney 31% | Newt Gingrich 16% | Rick Santorum 15% | Ron Paul 14% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 1, 2012 | Mitt Romney 38% | Newt Gingrich 23% | Rick Santorum 17% | Ron Paul 14%, Other 1%, Undecided 6% |
| EPIC-MRA Margin of error: ±6% Sample size: 271 | Jan. 21–25, 2012 | Mitt Romney 31% | Newt Gingrich 26% | Ron Paul 14% | Rick Santorum 10% |
| MIRS Margin of error: ±6% Sample size: 266 | Dec. 6–9, 2011 | Mitt Romney 48% | Newt Gingrich 33% | Michele Bachmann 11% | Rick Perry 7% Undecided 16.95% |
| Strategic National Margin of error: ±5% Sample size: | Dec. 8, 2011 | Newt Gingrich 30.75% | Mitt Romney 28.74% | Ron Paul 7.47% | Michele Bachmann 6.32%, Jon Huntsman 4.02%, Rick Santorum 3.16%, Rick Perry 2.59% Undecided 16.95% |
| EPIC-MRA/WXYZ-TV (Channel 7) Margin of error: ±6.1% Sample size: 259 | Nov. 13–16, 2011 | Mitt Romney 34% | Newt Gingrich 20% | Herman Cain 13% | Ron Paul 8%, Rick Perry 5%, Michele Bachmann 3%, Jon Huntsman 2%, Rick Santorum 2%, Undecided/Refused to answer 13% |
| Marketing Resource Group Margin of error: ±5.6% Sample size: 310 | Sep. 14–19, 2011 | Mitt Romney 34% | Rick Perry 13% | Newt Gingrich 7% | Ron Paul 6%, Herman Cain 5%, Michele Bachmann 3%, Jon Huntsman 3%, Thaddeus McCotter 2%, Rick Santorum 1%, Undecided 27% |
| EPIC-MRA Margin of error: ±6.7% Sample size: 210 | Aug. 13–16, 2011 | Mitt Romney 32% | Rick Perry 17% | Michele Bachmann 12% | Newt Gingrich 5%, Sarah Palin 5%, Ron Paul 5%, Herman Cain 3%, Rick Santorum 2%, Jon Huntsman 1%, Thaddeus McCotter 1%, Tim Pawlenty 1%, Undecided 16% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jul. 21–24, 2011 | Mitt Romney 25% | Rick Perry 13% | Michele Bachmann 12% | Sarah Palin 12%, Herman Cain 7%, Newt Gingrich 6%, Ron Paul 6%, Thaddeus McCotter 5%, Tim Pawlenty 3%, someone else/not sure 11% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jul. 21–24, 2011 | Mitt Romney 24% | Michele Bachmann 18% | Rick Perry 14% | Herman Cain 7%, Newt Gingrich 7%, Ron Paul 6%, Thaddeus McCotter 5%, Tim Pawlenty 4%, someone else/not sure 17% |
| Public Policy Polling Margin of error: ±5.2% Sample size: 360 | Mar. 18–20, 2011 | Mitt Romney 26% | Mike Huckabee 20% | Newt Gingrich 15% | Sarah Palin 12%, Ron Paul 7%, Mitch Daniels 5%, Tim Pawlenty 3%, Scott Walker 3%, someone else/undecided 10% |
| Strategic National Margin of error: ±4.5% Sample size: 480 | Jan. 24–25, 2011 | Mitt Romney 24% | Mike Huckabee 19% | Sarah Palin 17% | Newt Gingrich 10%, Tim Pawlenty 4%, Jon Huntsman 2%, Rick Santorum 2%, Haley Barbour 1%, Mitch Daniels 1%, undecided 21% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Dec. 3–6, 2010 | Mitt Romney 22% | Mike Huckabee 22% | Sarah Palin 18% | Newt Gingrich 15%, Ron Paul 10%, Tim Pawlenty 3%, Mitch Daniels 2%, John Thune 1%, someone else/undecided 7% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Sep. 17–19, 2010 | Mitt Romney 30% | Sarah Palin 17% | Newt Gingrich 16% | Mike Huckabee 14%, Ron Paul 8%, someone else 6%, undecided 8% |
| Public Policy Polling Margin of error: ±5.1% Sample size: 377 | May 25–27, 2010 | Mitt Romney 37% | Sarah Palin 24% | Newt Gingrich 16% | Mike Huckabee 12%, Ron Paul 6%, undecided 4% |