# Statewide opinion polling for the March 2008 Democratic Party presidential primaries

This article is a collection of statewide public opinion polls that have been conducted relating to the March Democratic presidential primaries, 2008.

## Polling
### Mississippi

Mississippi winner: Barack Obama Format: Primary see: Mississippi Democratic primary, 2008 Date: 11 March 2008 Delegates At Stake 33 Delegates Won To be determined
| Poll source | Date | Highlights |
| American Research Group Sample Size: 600 LV Margin of Error: ± 4% | March 9–10, 2008 | Obama 54%, Clinton 38%, Other 4%, Undecided 4% |
| InsiderAdvantage/Majority Opinion Sample Size: 338 Margin of Error: ± 6% | March 9, 2008 | Obama 54%, Clinton 37%, Undecided 9% |
| InsiderAdvantage Sample Size: 412 Margin of Error: ± 5% | March 6, 2008 | Obama 46%, Clinton 40%, Undecided 14% |
| American Research Group Sample Size: 600 LV Margin of Error: ± 4% | March 5–6, 2008 | Obama 58%, Clinton 34%, Other 5%, Undecided 3% |
| Rasmussen Reports Sample Size: 816 LV Margin of Error: ± 4% | March 5, 2008 | Obama 53%, Clinton 39%, Undecided 8% |

### Ohio

Ohio winner: Hillary Clinton Format: Primary see: Ohio Democratic primary, 2008 Date: March 4, 2008 Delegates At Stake 141 Delegates Won To be determined
| Poll source | Date | Highlights |
| American Research Group Sample Size: 600 Margin of Error: ±4% | March 2–3, 2008 | Clinton 56%, Obama 42%, Someone else 1%, Undecided 1% |
| Zogby Sample Size: 828 Margin of Error: ±3.4% | March 1–3, 2008 | Obama 44%, Clinton 44%, Gravel 1%, Someone else 3%, Not sure 8% |
| Rasmussen Reports Sample Size: 858 Margin of Error: ±3% | March 2, 2008 | Clinton 50%, Obama 44%, Undecided 6% |
| Survey USA Sample Size: 873 Margin of Error: ±3.4% | March 1–2, 2008 | Clinton 54%, Obama 44%, Other 1%, Undecided 1% |
| Public Policy Polling Sample Size: 1112 Margin of Error: ±2.9% | March 1–2, 2008 | Clinton 51%, Obama 42%, Undecided 7% |
| Suffolk University Sample Size: 400 | March 1–2, 2008 | Clinton 52%, Obama 40%, Undecided 8% |
| Zogby Sample Size: 761 Margin of Error: ±3.6% | February 29 – March 2, 2008 | Obama 47%, Clinton 45%, Gravel 1%, Someone else 2%, Not sure 6% |
| University of Cincinnati Sample Size: 624 Margin of Error: ±3.9% | February 28 – March 2, 2008 | Clinton 51.3%, Obama 42.3%, Edwards 6.0%, Other 0.4% |
| Quinnipiac University Sample Size: 799 Margin of Error: ±3.5% | February 27 – March 2, 2008 | Clinton 49%, Obama 45%, Undecided 6% |
| American Research Group Sample Size: 600 Margin of Error: ±4% | February 29 – March 1, 2008 | Clinton 51%, Obama 44%, Other 1%, Undecided 4% |
| Zogby Sample Size: 746 Margin of Error: ± 3.7% | February 28 – March 1, 2008 | Clinton 47%, Obama 46%, Gravel 1%, Someone Else 1%, Not Sure 5% |
| Mason-Dixon Sample Size: 625 Margin of Error: ± 4% | February 27–29, 2008 | Clinton 47%, Obama 43% |
| Zogby Sample Size: 701 Margin of Error: ± 3.8% | February 27–29, 2008 | Obama 45%, Clinton 45%, Gravel 1%, Someone Else 3%, Not Sure 6% |
| Columbus Dispatch Sample Size: 2,308 Margin of Error: | February 21–29, 2008 | Clinton 56%, Obama 40% |
| Rasmussen Reports Sample Size: 851 Margin of Error: ± 3.8% | February 28, 2008 | Clinton 47%, Obama 45%, Undecided 9% |
| American Research Group Sample Size: 600 Margin of Error: ±4% | February 27–28, 2008 | Clinton 50%, Obama 45%, Other 2%, Undecided 3% |
| Zogby Sample Size: 708 Margin of Error: ± 3% | February 26–28, 2008 | Clinton 44%, Obama 42%, Gravel 1%, Someone Else 5%, Not Sure 9% |
| Rasmussen Reports Sample Size: 862 Margin of Error: ± 3.8% | February 26–28, 2008 | Clinton 48%, Obama 43%, Undecided 9% |
| SurveyUSA Sample Size: 790 Margin of Error: ±3.6% | February 23–25, 2008 | Clinton 50%, Obama 44%, Other 3%, Undecided 3% |
| Public Policy Polling Sample Size: 600 Margin of Error: ±4% | February 23–24, 2008 | Clinton 50%, Obama 46%, Undecided 4% |
| American Research Group Sample Size: 600 Margin of Error: ±4% | February 23–24, 2008 | Clinton 49%, Obama 39%, Other 4%, Undecided 8% |
| Institute of Policy Research at the University of Cincinnati Sample Size: 529 Margin of Error: ±4.3% | February 21–24, 2008 | Clinton 47%, Obama 39%, Edwards 9%, Other 2%, Undecided 4% |
| Quinnipiac University Sample Size: 741 Margin of Error: ±3.6% | February 18–23, 2008 | Clinton 51%, Obama 40%, Other 1%, Undecided 9% |
| Decision Analyst Sample Size: 735 Margin of Error: ± 3% | February 21–22, 2008 | Obama 54%, Clinton 46% |
| Rasmussen Reports Sample Size: 902 Margin of Error: ± 3% | February 21, 2008 | Clinton 48%, Obama 40%, Undecided 12% |
| Washington Post-ABC News Sample Size: 611 Margin of Error: ± 4% | February 16–20, 2008 | Clinton 50%, Obama 43%, No Opinion 6%, None of These 1%, Other 1% |
| SurveyUSA Sample Size: 733 LV Margin of Error: ±3.7% | February 17–18, 2008 | Clinton 52%, Obama 43%, Other 4%, Undecided 1% |
| Rasmussen Reports Sample Size: 754 LV Margin of Error: ±4% | February 13, 2008 | Clinton 51%, Obama 37%, Undecided 12% |
| Quinnipiac University Sample Size: 564 Margin of Error: ±4.1% | February 6–12, 2008 | Clinton 55%, Obama 34%, Other 2%, Undecided 9% |
| SurveyUSA Sample Size: 720 Margin of Error: ±3.7% | February 10–11, 2008 | Clinton 56%, Obama 39%, Other 3%, Undecided 2% |
| Columbus Dispatch Sample Size: 2,156 Margin of Error: ±2% | January 23–31, 2008 | Clinton 42%, Obama 19%, Edwards 18%, Kucinich 1%, Undecided 20% |
| Opinion Consultants Sample Size: 800 | | Clinton 44%, Obama 28%, Edwards 17% |
| Quinnipiac University Sample Size: 436 Margin of Error: ± 4.7% | November 26 – December 3, 2007 | Clinton 45%, Obama 19%, Edwards 13%, Biden 3%, Kucinich 2%, Richardson 1%, Dodd 1%, Gravel -, Other -, Undecided 13% |
| Quinnipiac University | November 6–11, 2007 | Clinton 42%, Obama 17%, Edwards 14%, Kucinich 4%, Biden 3%, Richardson 1%, Dodd -, Gravel -, Other -, Undecided 17% |
| Quinnipiac University | October 1–8, 2007 | Clinton 47%, Obama 19%, Edwards 11%, Kucinich 2%, Biden 2%, Richardson 1%, Dodd -, Gravel -, Other -%, undecided 15% |
| Strategic Vision | September 14–16, 2007 | Clinton 43%, Obama 23%, Edwards 11%, Richardson 8%, Biden 3%, Kucinich 2%, Dodd 1, Undecided 11% |
| Quinnipiac University | August 28 – September 3, 2007 | Clinton 44%, Obama 15%, Edwards 11%, Gore 8%, Kucinich 3%, Biden 2%, Richardson 1%, Dodd -, Gravel -, Other 1%, undecided 13% |
| Quinnipiac University | July 30 – August 6, 2007 | Clinton 41%, Obama 16%, Edwards 11%, Gore 8%, Biden 3%, Kucinich 2%, Richardson 1%, Dodd -, Gravel -, Other 3%, undecided 14% |
| Quinnipiac University | July 3–9, 2007 | Clinton 35%, Obama 17%, Edwards 13%, Gore 12%, Kucinich 3%, Richardson 2%, Biden 1%, Dodd -, Gravel -, Other 2%, undecided 15% |
| Quinnipiac University (without Gore) | June 18–25, 2007 | Clinton 46%, Edwards 15%, Obama 14%, Kucinich 3%, Biden 1%, Richardson 1%, Dodd -, Gravel -, Other 2%, undecided 17% |
| Quinnipiac (with Gore) | June 18–25, 2007 | Clinton 40%, Edwards 12%, Gore 12%, Obama 12%, Kucinich 3%, Biden 1%, Richardson 1%, Dodd -, Gravel -, Other 2%, undecided 16% |
| Quinnipiac University | May 8–13, 2007 | Clinton 38%, Obama 19%, Edwards 11%, Gore 10%, Kucinich 2%, Richardson 2%, Biden 1%, Clark -, Dodd -, Gravel -, Someone Else 3%, Don't Know 14% |
| Quinnipiac University | March 13–19, 2007 | Clinton 32%, Obama 22%, Gore 14%, Edwards 11%, Kucinich 3%, Biden 1%, Richardson 1%, Clark 0%, Dodd 0%, Gravel 0%, Someone Else 2%, Wouldn't Vote 1%, Don't Know 15% |
| Quinnipiac University | January 23–28, 2007 | Clinton 38%, Obama 13%, Edwards 11%, Gore 6%, Kerry 6%, Biden 2%, Kucinich 2%, Richardson 1%, Clark 1%, Dodd 0%, Vilsack 0%, Someone Else 1%, Wouldn't Vote 1%, Don't Know 17% |

### Rhode Island

Rhode Island winner: Hillary Clinton Format: Primary see: Rhode Island Democratic primary, 2008 Date: March 4, 2008 Delegates At Stake 21 Delegates Won To be determined See also
| Poll source | Date | Highlights |
| Brown University Poll Sampling Size: 402 Margin of Error: ±4.88% | February 27 – March 2, 2008 | Clinton 42%, Obama 37%, Undecided 22% |
| WPRI 12 /RIPolitics.TV Sample Size: 401 Margin of Error: ± 5% | February 24–27, 2008 | Clinton 49%, Obama 40%, Not Sure 11% |
| Rasmussen Sample Size: 1,035 Margin of Error: ± 3.5% | February 23, 2008 | Clinton 53%, Obama 38%, Undecided 9% |
| American Research Group Sample Size: 600 Margin of Error: ± 4% | February 20–21, 2008 | Clinton 52%, Obama 40%, someone else 1%, undecided 7% |
| Brown University Poll Sampling Size: 474 Margin of Error: ±5% | February 9–10, 2008 | Clinton 36%, Obama 28%, uncommitted 27%, undecided 9% |
| Brown University Poll Sampling Size: 380 Margin of Error: ±5% | September 8–9, 2007 | Clinton 35%, Obama 16%, Edwards 7%, Biden 3%, Richardson 2%, Dodd 1%, Kucinich 1%, undecided 35% |
| Brown University Poll Sampling Size: 341 Margin of Error: ±6% | January 27, 2007 | Clinton 33%, Obama 15%, Edwards 8%, Biden 4%, Dodd 2%, Richardson 1%, Vilsack 1%, undecided 36% |

### Texas

Texas winner: Hillary Clinton (overall popular vote; see Texas Democratic primary and caucuses, 2008 for details) Format: Primary-Caucus Hybrid see: Texas Democratic primary and caucuses, 2008 Date: March 4, 2008 Delegates At Stake 193 Delegates Won To be determined See also
| Poll source | Date | Highlights |
| American Research Group Sample Size: 600 Margin of Error: ±4% | March 2–3, 2008 | Clinton 50%, Obama 47%, Someone else 1%, Undecided 2% |
| Zogby Sample Size: 855 Margin of Error: ±3.4% | March 1–3, 2008 | Clinton 47%, Obama 44%, Gravel 1%, Someone else 2%, Not sure 7% |
| Insider Advantage/Majority Opinion Sample Size: 609 | March 2, 2008 | Clinton 49%, Obama 44%, Not sure 7% |
| Rasmussen Reports Sample Size: 858 Margin of Error: ±3% | March 2, 2008 | Obama 48%, Clinton 47%, Undecided 6% |
| SurveyUSA Sample Size: 840 Margin of Error: ±3.5% | March 1–2, 2008 | Obama 49%, Clinton 48%, Other 2%, Undecided 2% |
| Public Policy Polling Sample Size: 755 Margin of Error: ± 3.6% | March 1–2, 2008 | Clinton 50%, Obama 44%, Not sure 6% |
| Zogby Sample Size: 748 Margin of Error: ± 3.7% | February 29 – March 2, 2008 | Obama 47%, Clinton 44%, Gravel 2%, Someone else, 1%, Not sure 6% |
| IVR Polls Sample Size: 1162 Margin of Error: ± 2.9% | February 28 – March 2, 2008 | Clinton 49%, Obama 46% |
| American Research Group Sample Size: 600 Margin of Error: ± 4% | February 29 – March 1, 2008 | Obama 47%, Clinton 47%, Other 2%, Undecided 4%f |
| Public Strategies/WFAA Dallas/BELO Corp. Sample Size: 730 LV Margin of Error: ± 3.6% | February 28 – March 1, 2008 | Obama 46%, Clinton 46%, Not sure 8% |
| Zogby Sample Size: 736 LV Margin of Error: ± 3.7% | February 28 – March 1, 2008 | Obama 47%, Clinton 43%, Gravel 1%, Someone Else, 2%, Not sure 7% |
| Mason-Dixon Sample Size: 625 Margin of Error: ± 4% | February 27–29, 2008 | Obama 46%, Clinton 45% |
| Zogby Sample Size: 708 Margin of Error: ± 3.8% | February 27–29, 2008 | Obama 45%, Clinton 43%, Gravel <1%, Someone Else 3%, Not Sure 8% |
| Insider Advantage Sample Size: 591 | February 28, 2008 | Clinton 47%, Obama 43%, Undecided 10% |
| American Research Group Sample Size: 600 Margin of Error: ± 4% | February 27–28, 2008 | Obama 51%, Clinton 44%, Other 2%, Undecided 3% |
| Zogby Sample Size: 704 Margin of Error: ± 3.8% | February 26–28, 2008 | Obama 48%, Clinton 42%, Gravel <1%, Someone Else 3%, Not Sure 7% |
| Fox News/Opinion Dynamics Sample Size: 600 Margin of Error: ± 4% | February 26–28, 2008 | Obama 48%, Clinton 45%, Someone Else 2%, Not Sure 5% |
| Rasmussen Reports Sample Size: 503 Margin of Error: ± 4% | February 27, 2008 | Obama 48%, Clinton 44%, Undecided 8% |
| Public Strategies/WFAA Dallas Sample Size: 735 Margin of Error: ±3.6% | February 25–27, 2008 | Obama 46%, Clinton 45%, Undecided 9% |
| Insider Advantage/Majority Opinion Sample Size: 592 | February 25, 2008 | Obama 47%, Clinton 46%, Undecided 7% |
| KTRK/SurveyUSA Sample Size: 704 Margin of Error: ± 3.8% | February 23–25, 2008 | Obama 49%, Clinton 45%, Other 3%, Undecided 3% |
| Rasmussen Reports Sample Size: 646 Margin of Error: ± 4% | February 24, 2008 | Clinton 46%, Obama 45%, Undecided 9% |
| Public Policy Polling Sample Size: 434 Margin of Error: ± 4.7% | February 23–24, 2008 | Clinton 48%, Obama 48%, Undecided 4% |
| American Research Group Sample Size: 600 Margin of Error: ± 4% | February 23–24, 2008 | Obama 50%, Clinton 42%, Other 2% Undecided 6% |
| CNN/Opinion Research Corp. Sample Size: 861 Margin of Error: ± 3.5% | February 22–24, 2008 | Obama 50%, Clinton 46% |
| Decision Analyst Sample Size: 678 Margin of Error: ± 3% | February 20–21, 2008 | Obama 57%, Clinton 43% |
| Washington Post-ABC News Sample Size: 603 Margin of Error: ± 4% | February 16–20, 2008 | Clinton 48%, Obama 47%, No Opinion 3%, None of These 1%, Other 1% |
| Rasmussen Reports Sample Size: 549 Margin of Error: ± 4% | February 20, 2008 | Clinton 47%, Obama 44%, Undecided 9% |
| Constituent Dynamics Sample Size: 1340 Margin of Error: ± 4% | February 20, 2008 | Clinton 46%, Obama 45%, Undecided 9% |
| IVR Polls Sample Size: 582 LV Margin of Error: ± 4.1% | February 20, 2008 | Clinton 50%, Obama 45%, Other 2%, Undecided 3% |
| SurveyUSA Sample Size: 660 LV Margin of Error: ± 3.9% | February 16–18, 2008 | Clinton 50%, Obama 45%, Other 3%, Undecided 2% |
| CNN/Opinion Research Corp. Sample Size: 529 LV Margin of Error: ± 4.5% | February 15–17, 2008 | Clinton 50%, Obama 48%, Undecided 2% |
| InsiderAdvantage Sample Size: 403 LV Margin of Error: ± 5% | February 14, 2008 | Clinton 48%, Obama 41%, Undecided 11% |
| Rasmussen Reports Sample Size: 577 LV Margin of Error: ± 4% | February 14, 2008 | Clinton 54%, Obama 38%, Undecided 9% |
| American Research Group Sample Size: 600 LV Margin of Error: ± 4% | February 13–14, 2008 | Obama 48%, Clinton 42%, Other 3% Undecided 7% |
| Texas Credit Union League Sample Size: 400 Margin of Error: ± 4.9% | February 11–13, 2008 | Clinton 49%, Obama 41%, Undecided 8% |
| IVR Polls Sample Size: 534 Margin of Error: ± 4.3% | January 30–31, 2008 | Clinton 48%, Obama 38%, Gravel 03%, Undecided 12% |
| IVR Polls Sample Size: 564 Margin of Error: ± 4.1% | January 10, 2008 | Clinton 46%, Obama 28%, Edwards 14%, Kucinich 1%, Gravel 1%, Undecided 10% |
| IVR Polls Sample Size: 510 Margin of Error: ± 4.3% | December 11, 2007 | Clinton 51%, Obama 17%, Edwards 15%, Richardson 8%, Kucinich 1%, Biden 1%, Dodd 0%, Gravel 0%, Undecided 6% |
| IVR Polls | November 8, 2007 | Clinton 51%, Obama 17%, Edwards 11%, Richardson 10%, Kucinich 2%, Biden 1%, Dodd 0%, Gravel 0%, Undecided 8% |
| IVR Polls | August 30, 2007 | Clinton 36.7%, Obama 17.6%, Edwards 14.6%, Richardson 8.9%, Biden 4.2%, Kucinich 3.2%, Gravel 1%, Dodd 0%, Undecided 13.7% |
| IVR Polls | July 9, 2007 | Clinton 42%, Obama 20%, Edwards 12%, Richardson 6%, Biden 3%, Kucinich 1%, Dodd 0%, Gravel 0% |
| IVR Polls | June 4, 2007 | Clinton 40%, Obama 15%, Edwards 13%, Richardson 9%, Kucinich 2%, Biden 1%, Dodd 1%, Gravel 0% |
| Lyceum Polls | April 26 – May 7, 2007 | Clinton 33%, Obama 21%, Edwards 8%, Richardson 3%, Biden 1%, Kucinich 1%, Dodd 0%, Gravel 0% |
| IVR Polls | April 24, 2007 | Clinton 35%, Obama 18%, Edwards 18%, Richardson 7%, Biden 2%, Kucinich 1%, Dodd 0%, Gravel 0% |
| IVR Polls | March 22, 2007 | Clinton 35%, Edwards 19%, Obama 15%, Richardson 7%, Kucinich 3%, Biden 2%, Dodd 1%, Gravel 0% |
| American Research Group | March 16–19, 2007 | Clinton 34%, Obama 32%, Edwards 11%, Biden 4%, Richardson 4%, Dodd 1%, Gravel 0%, Kucinich 0% |

### Vermont

Vermont winner: Barack Obama Format: Primary see: Vermont Democratic primary, 2008 Date: March 4, 2008 Delegates At Stake 15 Delegates Won To be determined See also
| Poll source | Date | Highlights |
| Rasmussen Sample Size: 1,013 Margin of Error: ± 3% | February 24, 2008 | Obama 57%, Clinton 33%, Undecided 10% |
| American Research Group Sample Size: 600 Margin of Error: ± 4% | February 20–21, 2008 | Obama 60%, Clinton 34%, Other 6% |
| American Research Group | February 2–6, 2007 | Clinton 37%, Obama 19%, Edwards 14%, Dodd 3%, Kucinich 3%, Clark 2%, Richardson 1%, undecided 21% |