# Statewide opinion polling for the March 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
### Washington (March 3)

Winner: Mitt Romney Caucus date: March 3, 2012 Delegates: 43
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Caucus results Turnout: 50,764 | March 3, 2012 | Mitt Romney 37.65% | Ron Paul 24.81% | Rick Santorum 23.81% | Newt Gingrich 10.28%, Others 3.44% |
| SurveyUSA Margin of error: ±4.5% Sample size: 500 | Feb. 29 – Mar. 1, 2012 | Mitt Romney 38% | Rick Santorum 24% | Ron Paul 14% | Newt Gingrich 10%, Barack Obama 6%, Other 3%, Undecided 6% |
| Public Policy Polling Margin of error: ±4.6% Sample size: 447 | Feb. 29 – Mar. 1, 2012 | Mitt Romney 37% | Rick Santorum 32% | Ron Paul 16% | Newt Gingrich 13%, Someone else/Not sure 2% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Feb. 16–19, 2012 | Rick Santorum 38% | Mitt Romney 27% | Ron Paul 15% | Newt Gingrich 12%, Someone else/Not sure 8% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Feb. 16–19, 2012 | Rick Santorum 49% | Mitt Romney 28% | Ron Paul 16% | Not sure 7% |
| SurveyUSA Margin of error: ±7.7% Sample size: 169 | Jan. 16, 2012 | Mitt Romney 26% | Newt Gingrich 22% | Rick Santorum 19% | Ron Paul 7%, Rick Perry 5%, Jon Huntsman, Jr. 2%, Undecided 18% |
| Public Policy Polling Margin of error: ±3.7% Sample size: 712 | Oct. 29–31, 2010 | Sarah Palin 19% | Mitt Romney 18% | Mike Huckabee 17% | Newt Gingrich 15%, Tim Pawlenty 4%, Mitch Daniels 2%, Mike Pence 1%, John Thune 0%, someone else/undecided 24% |

### Alaska (March 6)

Winner: Mitt Romney Caucus date: March 6, 2012 Delegates: 27
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Caucus results Turnout: 13,219 | March 6, 2012 | Mitt Romney 32.4% | Rick Santorum 29.2% | Ron Paul 24.0% | Newt Gingrich 14.1%, Uncommitted 0.3% |
| Public Policy Polling Margin of error: ±3.6% Sample size: 743 | Oct. 30–31, 2010 | Mike Huckabee 17% | Newt Gingrich 16% | Mitt Romney 16% | Sarah Palin 15%, Tim Pawlenty 5%, Mitch Daniels 2%, Mike Pence 2%, John Thune 2%, someone else/undecided 25% |
| Public Policy Polling Margin of error: ±3.5% Sample size: 805 | Aug. 27–28, 2010 | Mitt Romney 20% | Mike Huckabee 17% | Sarah Palin 17% | Newt Gingrich 16%, Ron Paul 10%, someone else 9%, undecided 11% |

### Georgia (March 6)

Winner: Newt Gingrich Primary date: March 6, 2012 Delegates: 76
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 900,434 | March 6, 2012 | Newt Gingrich 47.2% | Mitt Romney 25.9% | Rick Santorum 19.6% | Ron Paul 6.6%, Jon Huntsman, Jr. 0.2%, Michele Bachmann 0.2%, Rick Perry 0.2%, Buddy Roemer 0.1%, Gary Johnson 0.1% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 3–5, 2012 | Newt Gingrich 44% | Mitt Romney 24% | Rick Santorum 19% | Ron Paul 9%, Undecided 3% |
| Public Policy Polling Margin of error: ±3.6% Sample size: 728 | Mar. 3–4, 2012 | Newt Gingrich 47% | Mitt Romney 24% | Rick Santorum 19% | Ron Paul 8%, Someone else/Not sure 2% |
| Public Policy Polling Margin of error: ±3.6% Sample size: 728 | Mar. 3–4, 2012 | Mitt Romney 38% | Rick Santorum 37% | Ron Paul 14% | Not sure 10% |
| CNN/ORC Margin of error: ±4% Sample size: 527 | Mar. 1–4, 2012 | Newt Gingrich 47% | Mitt Romney 24% | Rick Santorum 15% | Ron Paul 9%, None/No one 1%, No opinion 4% |
| Mason-Dixon Margin of error: ±4% Sample size: 625 | Feb. 29-Mar. 1, 2012 | Newt Gingrich 38% | Mitt Romney 24% | Rick Santorum 22% | Ron Paul 3%, Undecided 12% |
| Rosetta Stone Margin of error: ±3% Sample size: 950 | Mar. 1, 2012 | Newt Gingrich 42% | Mitt Romney 22% | Rick Santorum 16% | Ron Paul 5%, Undecided 15% |
| YouGov Margin of error: ±6.3% Sample size: 500 | Feb. 25 – Mar. 1, 2012 | Newt Gingrich 32% | Mitt Romney 27% | Rick Santorum 17% | Ron Paul 10%, Not sure 14% |
| Landmark/Rosetta Stone Margin of error: ±4% Sample size: 1,300 | Feb. 23, 2012 | Newt Gingrich 38% | Rick Santorum 25% | Mitt Romney 19% | Ron Paul 5%, Undecided 13% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 22, 2012 | Newt Gingrich 33% | Rick Santorum 28% | Mitt Romney 20% | Ron Paul 9%, Someone else 2%, Undecided 8% |
| InsiderAdvantage/Majority Opinion Research Margin of error: ±3.6% Sample size: 721 | Feb. 20, 2012 | Newt Gingrich 25.9% | Mitt Romney 23.9% | Rick Santorum 22.8% | Ron Paul 11.7%, Someone else 4.4%, No opinion 11.3% |
| Rosetta Stone Communications/Landmark Communications Margin of error: ±2.6% Sample size: 1,475 | Feb. 9, 2012 | Newt Gingrich 35% | Rick Santorum 26% | Mitt Romney 16% | Ron Paul 5%, Undecided 18% |
| Survey USA Margin of error: ±4.7% Sample size: 459 | Feb. 1–2, 2012 | Newt Gingrich 45% | Mitt Romney 32% | Rick Santorum 9% | Ron Paul 8%, Undecided 4%, Other 2% |
| Mason-Dixon Margin of error: ±4% Sample size: 1,025 | Dec. 12–14, 2011 | Newt Gingrich 43% | Mitt Romney 21% | Rick Perry 7% | Ron Paul 4%, Michele Bachmann 3%, Jon Huntsman 2%, Rick Santorum 1%, Undecided 19% |
| InsiderAdvantage/Majority Opinion Research Margin of error: Sample size: 516 | Dec. 9, 2011 | Newt Gingrich 54.1% | Mitt Romney 12.4% | Ron Paul 5.5% | Michele Bachmann 3.8%, Rick Perry 2.9%, Rick Santorum 1.7%, Jon Huntsman 1.5%, Someone else 0.7%, No opinion 17.4% |
| SurveyUSA Margin of error: ±4.7% Sample size: 362 | Dec. 6–7, 2011 | Newt Gingrich 65% | Mitt Romney 12% | Michele Bachmann 5% | Ron Paul 5%, Rick Perry 4%, Jon Huntsman 1%, Rick Santorum 1%, Undecided 6% |
| InsiderAdvantage Margin of error: ±3% Sample size: 678 | Oct. 3, 2011 | Herman Cain 41% | Newt Gingrich 17% | Mitt Romney 10% | Rick Perry 9%, Ron Paul 5%, Michele Bachmann 1%, Jon Huntsman 1%, Other 4%, No opinion/Undecided 12% |
| InsiderAdvantage Margin of error: ±5% Sample size: 425 | Aug. 18, 2011 | Rick Perry 24% | Herman Cain 15% | Newt Gingrich 9% | Michele Bachmann 8%, Sarah Palin 8%, Mitt Romney 6%, Ron Paul 5%, Jon Huntsman 1%, Other 4%, No opinion/Undecided 20% |
| Insider-Advantage-WSB-TV Margin of error: ±5% Sample size: 407 | Jun. 3, 2011 | Herman Cain 26% | Michele Bachmann 13% | Newt Gingrich 12% | Sarah Palin 11%, Mitt Romney 10%, Ron Paul 1%, Tim Pawlenty 1%, Other 4%, Undecided 22% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 31 – Apr. 3, 2011 | Mike Huckabee 23% | Newt Gingrich 22% | Herman Cain 16% | Sarah Palin 10%, Mitt Romney 8%, Michele Bachmann 4%, Ron Paul 3%, Tim Pawlenty 3%, someone else/undecided 11% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 31 – Apr. 3, 2011 | Newt Gingrich 31% | Mike Huckabee 24% | Sarah Palin 10% | Mitt Romney 8%, Michele Bachmann 5%, Ron Paul 4%, Tim Pawlenty 4%, Haley Barbour 3%, someone else/undecided 11% |
| Magellan Strategies Margin of error: ±2.8% Sample size: 1,227 | Jul. 8, 2010 | Newt Gingrich 29.8% | Mike Huckabee 24.5% | Mitt Romney 14.4% | Sarah Palin 12.0%, Haley Barbour 4.7%, Tim Pawlenty 2.7%, undecided 11.9% |
| Public Policy Polling Margin of error: ±4.3% Sample size: 516 | Feb. 26–28, 2010 | Mike Huckabee 38% | Mitt Romney 28% | Sarah Palin 25% | undecided 9% |

### Massachusetts (March 6)

Winner: Mitt Romney Primary date: March 6, 2012 Delegates: 41
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 367,438 | March 6, 2012 | Mitt Romney 72.2% | Rick Santorum 12.0% | Ron Paul 9.5% | Newt Gingrich 4.6%, Jon Huntsman, Jr. 0.6%, No Preference 0.5%, Rick Perry 0.3%, Michele Bachmann 0.2% |
| YouGov Margin of error: ±8.7% Sample size: 400 | Feb. 25 – Mar. 1, 2012 | Mitt Romney 56% | Rick Santorum 16% | Newt Gingrich 5% | Ron Paul 5%, Not sure 17% |
| Suffolk University Margin of error: ±% Sample size: 172 | Feb. 11–15, 2012 | Mitt Romney 64% | Rick Santorum 16% | Ron Paul 7% | Newt Gingrich 6%, Undecided 6%, Refused 1% |
| Public Policy Polling Margin of error: ±6.1% Sample size: 255 | Sep. 16–18, 2011 | Mitt Romney 50% | Rick Perry 14% | Michele Bachmann 7% | Herman Cain 5%, Newt Gingrich 5%, Ron Paul 5%, Jon Huntsman 3%, Gary Johnson 1%, Rick Santorum 1%, someone else/not sure 10% |
| Public Policy Polling Margin of error: ±6.1% Sample size: 255 | Sep. 16–18, 2011 | Mitt Romney 63% | Rick Perry 26% | – | not sure 10% |
| Public Policy Polling Margin of error: ±6.3% Sample size: 244 | Jun. 2 – Jun. 5, 2011 | Mitt Romney 49% | Michele Bachmann 10% | Sarah Palin 9% | Herman Cain 8%, Tim Pawlenty 6%, Ron Paul 5%, Newt Gingrich 4%, Jon Huntsman 1%, Someone else/not sure 9% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 300 | Nov. 29 – Dec. 1, 2010 | Mitt Romney 47% | Sarah Palin 12% | Newt Gingrich 11% | Mike Huckabee 10%, Tim Pawlenty 4%, Ron Paul 3%, John Thune 2%, Mitch Daniels 1%, someone else/undecided 9% |

### Ohio (March 6)

Winner: Mitt Romney Primary date: March 6, 2012 Delegates: 66
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 1,203,403 | March 6, 2012 | Mitt Romney 37.9% | Rick Santorum 37.1% | Newt Gingrich 14.6% | Ron Paul 9.2%, Rick Perry 0.6%, Jon Huntsman, Jr. 0.5% |
| Merriman River Group Margin of error: ±3.4% Sample size: 832 LV | Mar. 4, 2012 | Mitt Romney 38% | Rick Santorum 33% | Newt Gingrich 18% | Ron Paul 8%, Unsure 1% |
| Rasmussen Reports Margin of error: ±4.4% Sample size: 750 | Mar. 4, 2012 | Rick Santorum 32% | Mitt Romney 31% | Newt Gingrich 13% | Ron Paul 13%, Undecided 6% |
| Suffolk University Margin of error: ±4.4% Sample size: 500 | Mar. 3–4, 2012 | Rick Santorum 37% | Mitt Romney 33% | Newt Gingrich 16% | Ron Paul 8%, Undecided 6% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 3–4, 2012 | Mitt Romney 35% | Rick Santorum 28% | Newt Gingrich 18% | Ron Paul 13%, Other 1%, Undecided 5% |
| Public Policy Polling Margin of error: ±3.8% Sample size: 666 | Mar. 3–4, 2012 | Mitt Romney 37% | Rick Santorum 36% | Newt Gingrich 15% | Ron Paul 11%, Someone else/Not sure 2% |
| Public Policy Polling Margin of error: ±3.8% Sample size: 666 | Mar. 3–4, 2012 | Rick Santorum 40% | Mitt Romney 39% | Ron Paul 14% | Not sure 8% |
| Quinnipiac Margin of error: ±3.6% Sample size: 753 | Mar. 2–4, 2012 | Mitt Romney 34% | Rick Santorum 31% | Newt Gingrich 15% | Ron Paul 12%, None/No one 2%, No opinion 8% |
| CNN/ORC Margin of error: ±4% Sample size: 546 | Mar. 1–4, 2012 | Mitt Romney 32% | Rick Santorum 32% | Newt Gingrich 14% | Ron Paul 11%, None/No one 2%, No opinion 8% |
| Reuters/Ipsos Margin of error: ±4% Sample size: 917 | Mar. 1–3, 2012 | Mitt Romney 32% | Rick Santorum 32% | Newt Gingrich 17% | Ron Paul 6% |
| NBC News/Marist Margin of error: ±3.4% Sample size: 820 | Feb. 29 – Mar. 2, 2012 | Rick Santorum 34% | Mitt Romney 32% | Newt Gingrich 15% | Ron Paul 13%, Other 1%, Undecided 6% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Mar. 1, 2012 | Rick Santorum 33% | Mitt Romney 31% | Newt Gingrich 15% | Ron Paul 11%, Other 2%, Undecided 8% |
| Quinnipiac Margin of error: ±4.3% Sample size: 517 | Feb. 29 – Mar. 1, 2012 | Rick Santorum 35% | Mitt Romney 31% | Newt Gingrich 17% | Ron Paul 12%, Don't know/No answer 6% |
| YouGov Margin of error: ±5.3% Sample size: 650 | Feb. 25 – Mar. 1, 2012 | Rick Santorum 33% | Mitt Romney 27% | Newt Gingrich 12% | Ron Paul 9%, Not sure 19% |
| Quinnipiac Margin of error: ±3.4% Sample size: 847 | Feb. 23–26, 2012 | Rick Santorum 36% | Mitt Romney 29% | Newt Gingrich 17% | Ron Paul 11%, Don't know/No answer 6% |
| Rasmussen Reports Margin of error: ±4.2% Sample size: 750 | Feb. 15, 2012 | Rick Santorum 42% | Mitt Romney 24% | Newt Gingrich 13% | Ron Paul 10%, Other 3%, Undecided 8% |
| Quinnipiac Margin of error: ±4.2% Sample size: 1,421 | Feb. 7–12, 2012 | Rick Santorum 36% | Mitt Romney 29% | Newt Gingrich 20% | Ron Paul 9% |
| Public Policy Polling Margin of error: ±3.9% Sample size: 626 | Jan. 28–29, 2012 | Newt Gingrich 26% | Mitt Romney 25% | Rick Santorum 22% | Ron Paul 11%, Someone else/Not sure 16% |
| Public Policy Polling Margin of error: ±3.9% Sample size: 626 | Jan. 28–29, 2012 | Newt Gingrich 42% | Mitt Romney 39% | – | Not sure 19% |
| Public Policy Polling Margin of error: ±3.9% Sample size: 626 | Jan. 28–29, 2012 | Mitt Romney 61% | Ron Paul 23% | – | Not sure 16% |
| Public Policy Polling Margin of error: ±3.9% Sample size: 626 | Jan. 28–29, 2012 | Rick Santorum 45% | Mitt Romney 38% | – | Not sure 18% |
| Quinnipiac Margin of error: ±4.2% Sample size: 542 | Jan. 9–16, 2012 | Mitt Romney 27% | Rick Santorum 18% | Newt Gingrich 17% | Ron Paul 10%, Rick Perry 4%, Someone Else 1%, Wouldn't Vote 2%, Don't Know/No Answer 20% |
| Quinnipiac Margin of error: ±4.4% Sample size: 500 | Nov. 28 – Dec. 5, 2011 | Newt Gingrich 36% | Mitt Romney 18% | Herman Cain 7% | Ron Paul 7%, Michele Bachmann 5%, Rick Perry 4%, Rick Santorum 2%, Jon Huntsman 1%, Someone Else 2%, Wouldn't Vote 2%, Don't Know/No Answer 15% |
| Quinnipiac Margin of error: ±4.4% Sample size: 500 | Nov. 28 – Dec. 5, 2011 | Newt Gingrich 55% | Mitt Romney 28% | – | Someone Else 3%, Wouldn't Vote 3%, Don't Know/No Answer 13% |
| Quinnipiac University Margin of error: ±4.7% Sample size: 443 | Oct. 31 – Nov. 7, 2011 | Herman Cain 25% | Mitt Romney 20% | Newt Gingrich 11% | Ron Paul 9%, Michele Bachmann 4%, Rick Perry 4%, Jon Huntsman 2%, Rick Santorum 1%, Unknown 20% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 500 | Nov. 4–6, 2011 | Herman Cain 34% | Newt Gingrich 20% | Mitt Romney 19% | Ron Paul 5%, Rick Perry 5%, Michele Bachmann 4%, Jon Huntsman 2%, Gary Johnson 1%, Rick Santorum 1%, someone else/not sure 9% |
| Quinnipiac Margin of error: ±4.2% Sample size: 542 | Oct. 17–23, 2011 | Herman Cain 28% | Mitt Romney 23% | Ron Paul 8% | Newt Gingrich 7%, Michele Bachmann 4%, Rick Perry 4%, Jon Huntsman 2%, Rick Santorum 1%, don't know 18%, someone else 2%, wouldn't vote 2% |
| Quinnipiac Margin of error: ±4.2% Sample size: 542 | Oct. 17–23, 2011 | Herman Cain 40% | Mitt Romney 33% | Rick Perry 10% | don't know 14%, wouldn't vote 2%, someone else 1% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 500 | Oct. 13–16, 2011 | Herman Cain 34% | Mitt Romney 19% | Newt Gingrich 14% | Ron Paul 7%, Michele Bachmann 6%, Rick Perry 5%, Jon Huntsman 1%, Rick Santorum 1%, Gary Johnson 0%, someone else/not sure 12% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 500 | Oct. 13–16, 2011 | Mitt Romney 50% | Rick Perry 35% | – | not sure 15% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 500 | Oct. 13–16, 2011 | Herman Cain 50% | Mitt Romney 36% | – | not sure 13% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 500 | Oct. 13–16, 2011 | Herman Cain 58% | Rick Perry 24% | – | not sure 18% |
| Quinnipiac Margin of error: ±4.8% Sample size: 423 | Sep. 20–25, 2011 | Mitt Romney 24% | Rick Perry 20% | Sarah Palin 9% | Herman Cain 7%, Ron Paul 6%, Newt Gingrich 4%, Rick Santorum 4%, Michele Bachmann 3%, Jon Huntsman 1%, don't know 21%, someone else 1%, wouldn't vote 1% |
| Quinnipiac Margin of error: ±4.8% Sample size: 423 | Sep. 20–25, 2011 | Mitt Romney 25% | Rick Perry 21% | Herman Cain 7% | Newt Gingrich 6%, Ron Paul 6%, Michele Bachmann 4%, Rick Santorum 4%, Jon Huntsman 2%, don't know 22%, someone else 1%, wouldn't vote 1% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Aug. 11–14, 2011 | Rick Perry 21% | Mitt Romney 18% | Sarah Palin 11% | Michele Bachmann 10%, Herman Cain 8%, Newt Gingrich 7%, Ron Paul 7%, Tim Pawlenty 3%, Jon Huntsman 1%, someone else/undecided 15% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Aug. 11–14, 2011 | Rick Perry 21% | Mitt Romney 20% | Michele Bachmann 14% | Herman Cain 10%, Newt Gingrich 8%, Ron Paul 8%, Tim Pawlenty 3%, Jon Huntsman 1%, someone else/undecided 16% |
| Quinnipiac Margin of error: ±4.1% Sample size: 563 | Jul. 12–18, 2011 | Mitt Romney 16% | Sarah Palin 15% | Michele Bachmann 11% | Rick Perry 8%, Herman Cain 6%, Ron Paul 5%, Newt Gingrich 4%, Tim Pawlenty 3%, Rick Santorum 2%, Jon Huntsman 1%, Thaddeus McCotter 0%, someone else/not sure 28% |
| Quinnipiac Margin of error: ±4.1% Sample size: 563 | Jul. 12–18, 2011 | Mitt Romney 19% | Sarah Palin 15% | Michele Bachmann 14% | Herman Cain 7%, Newt Gingrich 5%, Ron Paul 5%, Tim Pawlenty 3%, Rick Santorum 2%, Jon Huntsman 1%, Thaddeus McCotter 0%, someone else/not sure 29% |
| Quinnipiac Margin of error: ±4.1% Sample size: 563 | Jul. 12–18, 2011 | Mitt Romney 19% | Michele Bachmann 16% | Rick Perry 8% | Herman Cain 7%, Newt Gingrich 6%, Ron Paul 6%, Tim Pawlenty 3%, Rick Santorum 3%, Jon Huntsman 1%, Thaddeus McCotter 0%, someone else/not sure 31% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | May 19–22, 2011 | Mitt Romney 21% | Sarah Palin 16% | Herman Cain 12% | Newt Gingrich 12%, Michele Bachmann 10%, Ron Paul 9%, Tim Pawlenty 5%, someone else/not sure 15% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | May 19–22, 2011 | Mitt Romney 23% | Newt Gingrich 16% | Herman Cain 13% | Ron Paul 13%, Michele Bachmann 11%, Tim Pawlenty 6%, Jon Huntsman 0%, someone else/not sure 18% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 10–13, 2011 | Mike Huckabee 19% | Mitt Romney 18% | Newt Gingrich 16% | Sarah Palin 15%, Ron Paul 7%, Tim Pawlenty 5%, Mitch Daniels 4%, Haley Barbour 2%, someone else/undecided 13% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Dec. 10–12, 2010 | Sarah Palin 21% | Mike Huckabee 19% | Newt Gingrich 18% | Mitt Romney 15%, Ron Paul 6%, Mitch Daniels 5%, Tim Pawlenty 3%, John Thune 2%, someone else/undecided 11% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 500 | Oct. 28–30, 2010 | Sarah Palin 20% | Newt Gingrich 19% | Mike Huckabee 17% | Mitt Romney 14%, Tim Pawlenty 6%, Mitch Daniels 3%, Mike Pence 2%, John Thune 0%, someone else/undecided 18% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 20–21, 2010 | Mitt Romney 32% | Mike Huckabee 28% | Sarah Palin 26% | undecided 14% |

### Oklahoma (March 6)

Winner: Rick Santorum Primary date: March 6, 2012 Delegates: 43
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 286,298 | March 6, 2012 | Rick Santorum 33.8% | Mitt Romney 28.0% | Newt Gingrich 27.5% | Ron Paul 9.6%, Rick Perry 0.5%, Michele Bachmann 0.3%, Jon Huntsman, Jr. 0.3% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 1–2, 2012 | Rick Santorum 37% | Mitt Romney 26% | Newt Gingrich 22% | Ron Paul 9%, Other 1%, Undecided 5% |
| YouGov Margin of error: ±8.8% Sample size: 250 | Feb. 25 – Mar. 1, 2012 | Rick Santorum 28% | Mitt Romney 25% | Newt Gingrich 20% | Ron Paul 8%, Not sure 19% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Feb. 21, 2012 | Rick Santorum 43% | Newt Gingrich 22% | Mitt Romney 18% | Ron Paul 7%, Some other candidate 2%, Undecided 7% |
| SoonerPoll.com Margin of error: ±5.66% Sample size: 278 | Feb. 8–16, 2012 | Rick Santorum 39% | Mitt Romney 23% | Newt Gingrich 18% | Ron Paul 8%, Don't know/refused 13% |
| American Research Group Margin of error: ±4% Sample size: 600 | Feb. 6–7, 2012 | Newt Gingrich 34% | Mitt Romney 31% | Rick Santorum 16% | Ron Paul 10%, Other 2%, Undecided 7% |
| SoonerPoll.com Margin of error: ±4.9% Sample size: 400 | Nov. 17–Dec. 16, 2011 | Newt Gingrich 33.3% | Mitt Romney 14.3% | Herman Cain 9.3% | Rick Perry 9.3%, Ron Paul 4.3%, Michele Bachmann 3.5%, Rick Santorum 1.5%, Jon Huntsman 1.3% |
| Cole Hargrave Snodgrass & Associates Margin of error: ±6.7% Sample size: 215 | Aug. 9–11, 2011 | Rick Perry 22% | Mitt Romney 17% | Michele Bachmann 8% | Herman Cain 6%, Newt Gingrich 5%, Ron Paul 3%, Jon Huntsman 2%, Tim Pawlenty 2%, Undecided (vol.) 33% |

### Tennessee (March 6)

Winner: Rick Santorum Primary date: March 6, 2012 Delegates: 58
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 551,792 | March 6, 2012 | Rick Santorum 37.2% | Mitt Romney 28.1% | Newt Gingrich 23.9% | Ron Paul 9.0%, Uncommitted 0.6%, Rick Perry 0.4%, Michele Bachmann 0.3%, Jon Huntsman, Jr. 0.2%, Buddy Roemer 0.2%, Gary Johnson 0.1% |
| We Ask America Margin of error: ±3.06% Sample size: 1,023 LV | Mar. 4, 2012 | Mitt Romney 30% | Newt Gingrich 29% | Rick Santorum 29% | Ron Paul 12% |
| Public Policy Polling Margin of error: ±4.3% Sample size: 525 | Mar. 3–4, 2012 | Rick Santorum 34% | Mitt Romney 29% | Newt Gingrich 27% | Ron Paul 8%, Someone else/Not sure 2% |
| Public Policy Polling Margin of error: ±4.3% Sample size: 525 | Mar. 3–4, 2012 | Rick Santorum 47% | Mitt Romney 34% | Ron Paul 11% | Not sure 7% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Mar. 3, 2012 | Rick Santorum 34% | Mitt Romney 30% | Newt Gingrich 18% | Ron Paul 8%, Other 3%, Undecided 7% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 1–3, 2012 | Rick Santorum 35% | Mitt Romney 31% | Newt Gingrich 20% | Ron Paul 9%, Other 1%, Undecided 4% |
| YouGov Margin of error: ±6.6% Sample size: 500 | Feb. 25 – Mar. 1, 2012 | Rick Santorum 32% | Mitt Romney 23% | Newt Gingrich 16% | Ron Paul 13%, Not sure 15% |
| Middle Tennessee State University Margin of error: ±4% Sample size: 646 | Feb. 13–25, 2012 | Rick Santorum 40% | Mitt Romney 19% | Newt Gingrich 13% | Ron Paul 11% |
| Vanderbilt University Margin of error: ±2.6% Sample size: 815 | Feb. 16–22, 2012 | Rick Santorum 33% | Mitt Romney 17% | Ron Paul 13% | Newt Gingrich 10%, None of the above 10%, Would not vote 0%, Don't know 14%, Refused 3% |
| American Research Group Margin of error: ±4% Sample size: 600 | Feb. 8–9, 2012 | Rick Santorum 34% | Mitt Romney 27% | Newt Gingrich 16% | Ron Paul 13%, Other 1%, Undecided 9% |
| Vanderbilt Margin of error: ±2.6% Sample size: 1,423 | Oct. 28 – Nov. 5, 2011 | Herman Cain 19% | Mitt Romney 11% | Rick Perry 8% | Michele Bachmann 6%, Newt Gingrich 6%, Ron Paul 6%, Rick Santorum 1%, don't know 28%, would rather have another choice 13%, declined to answer 2% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Feb. 9–13, 2011 | Mike Huckabee 31% | Sarah Palin 17% | Newt Gingrich 11% | Mitt Romney 11%, Ron Paul 10%, Mitch Daniels 3%, Tim Pawlenty 3%, John Thune 1%, undecided 14% |

### Vermont (March 6)

Winner: Mitt Romney Primary date: March 6, 2012 Delegates: 17
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 60,304 | March 6, 2012 | Mitt Romney 39.7% | Ron Paul 25.5% | Rick Santorum 23.7% | Newt Gingrich 8.2%, Jon Huntsman, Jr. 2.0%, Rick Perry 0.9% |
| Castleton Polling Institute Margin of error: Sample size: 231 | Feb. 11–22, 2012 | Mitt Romney 34% | Rick Santorum 27% | Ron Paul 14% | Newt Gingrich 10%, Jon Huntsman 1%, Other 1%, Not sure 4%, Refused 9% |
| Public Policy Polling Margin of error: ±5.1% Sample size: 366 | Jul. 28–31, 2011 | Mitt Romney 26% | Michele Bachmann 16% | Sarah Palin 16% | Rick Perry 10%, Herman Cain 9%, Ron Paul 7%, Newt Gingrich 6%, Jon Huntsman 3%, Tim Pawlenty 1%, someone else/undecided 5% |
| Public Policy Polling Margin of error: ±5.1% Sample size: 366 | Jul. 28–31, 2011 | Mitt Romney 29% | Michele Bachmann 21% | Rick Perry 11% | Herman Cain 10%, Newt Gingrich 9%, Ron Paul 8%, Tim Pawlenty 2%, Jon Huntsman 1%, someone else/undecided 9% |

### Virginia (March 6)

Winner: Mitt Romney Primary date: March 6, 2012 Delegates: 50 Note: Only Mitt Romney and Ron Paul appeared on the ballot. Other candidates failed to submit the necessary 10,000 signatures.
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 265,521 | March 6, 2012 | Mitt Romney 59.5% | Ron Paul 40.5% | | |
| NBC News/Marist Margin of error: ±4.3% Sample size: 529 | Feb. 29 – Mar. 2, 2012 | Mitt Romney 69% | Ron Paul 26% | – | Undecided 6% |
| NBC News/Marist Margin of error: ±4.3% Sample size: 529 | Feb. 29 – Mar. 2, 2012 | Mitt Romney 36% | Rick Santorum 28% | Newt Gingrich 15% | Ron Paul 13%, Undecided 8% |
| Roanoke College Margin of error: ±5% Sample size: 377 | Feb. 13–28, 2012 | Mitt Romney 56% | Ron Paul 21% | – | Undecided 23% |
| Roanoke College Margin of error: ±5% Sample size: 377 | Feb. 13–28, 2012 | Mitt Romney 31% | Rick Santorum 27% | Newt Gingrich 13% | Ron Paul 12%, Uncertain 17% |
| Christopher Newport University/Richmond Times-Dispatch Margin of error: ±3.1% Sample size: 1,018 | Feb. 4–13, 2012 | Mitt Romney 53% | Ron Paul 23% | – | Other/Undecided 12%, Don't know/refused 12% |
| Quinnipiac University Margin of error: ±4.2% Sample size: 546 | Feb. 1–6, 2012 | Mitt Romney 68% | Ron Paul 19% | – | Don't know/No answer 13% |
| Quinnipiac University Margin of error: ±4.2% Sample size: 546 | Feb. 1–6, 2012 | Mitt Romney 37% | Newt Gingrich 27% | Rick Santorum 18% | Ron Paul 12%, Wouldn't vote 1%, Don't know/No answer 5% |
| Quinnipiac University Margin of error: ±4.4% Sample size: 489 | Dec. 13–19, 2011 | Newt Gingrich 30% | Mitt Romney 25% | Ron Paul 9% | Rick Perry 6%, Michele Bachmann 6%, Jon Huntsman 4%, Rick Santorum 3%, other 1%, wouldn't vote 1%, don't know 15% |
| Public Policy Polling Margin of error: ±5.2% Sample size: 350 | Dec. 11–13, 2011 | Newt Gingrich 41% | Mitt Romney 15% | Michele Bachmann 8% | Rick Perry 8%, Ron Paul 6%, Rick Santorum 6%, Jon Huntsman 3%, Gary Johnson 1%, Someone else/Not sure 12% |
| Quinnipiac Margin of error: ±5.3% Sample size: 345 | Oct. 5–9, 2011 | Herman Cain 21% | Mitt Romney 21% | Rick Perry 11% | Ron Paul 9%, Michele Bachmann 7%, Newt Gingrich 7%, Rick Santorum 2%, Jon Huntsman 1%, Wouldn't vote 1%, Don't know 20% |
| Christopher Newport University/Richmond Times-Dispatch Margin of error: ±5.4% Sample size: 1,027 | Oct. 3–8, 2011 | Mitt Romney 44% | Herman Cain 12% | Rick Perry 10% | Ron Paul 6%, Newt Gingrich 5%, Michele Bachmann 4%, Rick Santorum 2%, Jon Huntsman 1%, Other 2%, Don't know 14% |
| Quinnipiac Margin of error: ±4% Sample size: 591 | Sep. 7–12, 2011 | Rick Perry 25% | Mitt Romney 19% | Ron Paul 8% | Sarah Palin 7%, Herman Cain 6%, Michele Bachmann 5%, Newt Gingrich 4%, Rick Santorum 2%, Jon Huntsman 1%, Thaddeus McCotter 0%, someone else/undecided 21% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jul. 21–24, 2011 | Rick Perry 20% | Mitt Romney 16% | Michele Bachmann 15% | Sarah Palin 13%, Herman Cain 10%, Newt Gingrich 6%, Ron Paul 6%, Tim Pawlenty 2%, Jon Huntsman 1%, someone else/not sure 11% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jul. 21–24, 2011 | Michele Bachmann 21% | Rick Perry 18% | Mitt Romney 18% | Herman Cain 10%, Newt Gingrich 8%, Ron Paul 7%, Tim Pawlenty 3%, Jon Huntsman 2%, someone else/not sure 13% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Feb. 24–27, 2011 | Mike Huckabee 20% | Mitt Romney 16% | Sarah Palin 16% | Newt Gingrich 14%, Ron Paul 8%, Mitch Daniels 7%, Tim Pawlenty 4%, Haley Barbour 2%, someone else/undecided 11% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Nov. 10–13, 2010 | Mike Huckabee 21% | Newt Gingrich 20% | Sarah Palin 17% | Mitt Romney 15%, Ron Paul 7%, Tim Pawlenty 5%, Mitch Daniels 3%, John Thune 2%, someone else/undecided 11% |

### Alabama (March 13)

Winner: Rick Santorum Primary date: March 13, 2012 Delegates: 50
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 621,542 | March 13, 2012 | Rick Santorum 34.5% | Newt Gingrich 29.3% | Mitt Romney 29.0% | Ron Paul 5.0%, Uncommitted 1.5%, Rick Perry 0.3%, Michele Bachmann 0.3%, Jon Huntsman, Jr. 0.2% |
| Public Policy Polling Margin of error: ±4.0% Sample size: 600 | Mar. 10–11, 2012 | Mitt Romney 31% | Newt Gingrich 30% | Rick Santorum 29% | Ron Paul 8% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 9–11, 2012 | Newt Gingrich 34% | Mitt Romney 31% | Rick Santorum 24% | Ron Paul 6%, Other 1%, Undecided 4% |
| Alabama State University Margin of error: ±5% Sample size: 416 | Mar. 5–9, 2012 | Newt Gingrich 20.7% | Mitt Romney 20.2% | Rick Santorum 16.7% | Other 15.1%, Undecided 27.4% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Mar. 8, 2012 | Newt Gingrich 30% | Rick Santorum 29% | Mitt Romney 28% | Ron Paul 7%, Other 1%, Undecided 6% |
| Capital Survey Research Center Margin of error: ±4% Sample size: 554 | Mar. 6–8, 2012 | Mitt Romney 28.5% | Newt Gingrich 25.5% | Rick Santorum 21.1% | Ron Paul 4.5%, Don't know 20% |
| Capital Survey Research Center Margin of error: ±4% Sample size: 592 | Mar. 5–7, 2012 | Mitt Romney 29.9% | Newt Gingrich 24.7% | Rick Santorum 20.1% | Ron Paul 5.6%, Don't know/No reply 19.8% |
| Capital Survey Research Center Margin of error: ±4.4% Sample size: 510 | Mar. 1, 5–6, 2012 | Mitt Romney 31.2% | Rick Santorum 21.6% | Newt Gingrich 21% | Ron Paul 6.5%, Undecided 19.8% |
| Alabama State University Sample size: 470 | Mar. 1, 2012 | Rick Santorum 22.7% | Mitt Romney 18.7% | Newt Gingrich 13.8% | Other 15%, Undecided 29.8% |
| Capital Research Survey Center Sample size: 616 | Nov. 29 – Dec. 1, 2011 | Newt Gingrich 43% | Mitt Romney 14% | Herman Cain 10% | Rick Perry 4%, Ron Paul 3.5%, Michele Bachmann 3%, Jon Huntsman 1%, Rick Santorum 1%, Undecided 20% |
| Capital Research Survey Center Sample size: 841 | Aug. 2011 | Rick Perry 30% | Mitt Romney 24% | Michele Bachmann 11% | Ron Paul 7%, Herman Cain 7%, Newt Gingrich 5%, Jon Huntsman 1%, Rick Santorum 1%, Undecided 14% |
| Public Policy Polling Margin of error: ±4.6% Sample size: 457 | Mar. 27–29, 2010 | Mike Huckabee 41% | Sarah Palin 27% | Mitt Romney 20% | Undecided 13% |
| Public Strategy Associates Margin of error: ±3.1% Sample size: 1,007 | Feb. 3–4, 2010 | Mike Huckabee 33% | Sarah Palin 23% | Mitt Romney 12% | Ron Paul 5%, Tim Pawlenty 3%, Undecided 24% |

### Hawaii (March 13)

Winner: Mitt Romney Caucus date: March 13, 2012 Delegates: 20
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Caucus results Turnout: 10,228 | March 13, 2012 | Mitt Romney 44.5% | Rick Santorum 25.3% | Ron Paul 19.3% | Newt Gingrich 10.9% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 293 | Oct. 13–16, 2011 | Herman Cain 36% | Mitt Romney 24% | Newt Gingrich 8% | Rick Perry 8%, Michele Bachmann 6%, Ron Paul 4%, Jon Huntsman 1%, Gary Johnson 1%, Rick Santorum 1%, someone else/not sure 11% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 293 | Oct. 13–16, 2011 | Mitt Romney 49% | Rick Perry 30% | – | not sure 21% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 293 | Oct. 13–16, 2011 | Herman Cain 49% | Mitt Romney 34% | – | not sure 17% |
| Public Policy Polling Margin of error: ±5.7% Sample size: 293 | Oct. 13–16, 2011 | Herman Cain 54% | Rick Perry 22% | – | not sure 24% |

### Mississippi (March 13)

Winner: Rick Santorum Primary date: March 13, 2012 Delegates: 40
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 289,935 | March 13, 2012 | Rick Santorum 32.8% | Newt Gingrich 31.2% | Mitt Romney 30.6% | Ron Paul 4.4%, Rick Perry 0.5%, Michele Bachmann 0.3%, Jon Huntsman 0.1%, Gary Johnson 0.1% |
| Public Policy Polling Margin of error: ±3.8% Sample size: 656 | Mar. 10–11, 2012 | Newt Gingrich 33% | Mitt Romney 31% | Rick Santorum 27% | Ron Paul 7%, Undecided 4% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 10–11, 2012 | Mitt Romney 34% | Newt Gingrich 32% | Rick Santorum 22% | Ron Paul 8%, Other 1%, Undecided 3% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Mar. 8, 2012 | Mitt Romney 35% | Newt Gingrich 27% | Rick Santorum 27% | Ron Paul 6%, Other 1%, Undecided 4% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 7–8, 2012 | Newt Gingrich 35% | Mitt Romney 31% | Rick Santorum 20% | Ron Paul 7%, Undecided 7% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Nov. 4–6, 2011 | Newt Gingrich 28% | Herman Cain 25% | Rick Perry 14% | Mitt Romney 12%, Michele Bachmann 5%, Ron Paul 4%, Jon Huntsman 1%, Gary Johnson 1%, Rick Santorum 1%, someone else/not sure 9% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 24–27, 2011 | Haley Barbour 37% | Mike Huckabee 19% | Newt Gingrich 10% | Sarah Palin 10%, Mitt Romney 6%, Michele Bachmann 5%, Tim Pawlenty 3%, Ron Paul 2%, someone else/undecided 9% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 24–27, 2011 | Mike Huckabee 35% | Sarah Palin 20% | Newt Gingrich 18% | Mitt Romney 8%, Michele Bachmann 5%, Ron Paul 4%, Tim Pawlenty 3%, someone else/undecided 8% |

### Illinois (March 20)

Winner: Mitt Romney Primary date: March 20, 2012 Delegates: 69
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 922,146 | March 20, 2012 | Mitt Romney 46.7% | Rick Santorum 35.0% | Ron Paul 9.3% | Newt Gingrich 8.0%, Rick Perry 0.6% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 17–18, 2012 | Mitt Romney 44% | Rick Santorum 30% | Newt Gingrich 13% | Ron Paul 8%, Other 1%, Undecided 4% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 506 | Mar. 17–18, 2012 | Mitt Romney 45% | Rick Santorum 30% | Newt Gingrich 13% | Ron Paul 10%, Someone else/Not sure 2% |
| Public Policy Polling Margin of error: ±4.4% Sample size: 506 | Mar. 17–18, 2012 | Mitt Romney 45% | Rick Santorum 34% | Ron Paul 14% | Not sure 7% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Mar. 15, 2012 | Mitt Romney 41% | Rick Santorum 32% | Newt Gingrich 14% | Ron Paul 7%, Undecided 6% |
| Chicago Tribune Margin of error: ±4% Sample size: 600 | Mar. 7–9, 2012 | Mitt Romney 35% | Rick Santorum 31% | Newt Gingrich 12% | Ron Paul 7%, Undecided 16% |
| The Simon Poll/SIU Margin of error: ±3.0% Sample size: 1000 | Oct. 11–16, 2011 | Herman Cain 23.4% | Mitt Romney 20.6% | Newt Gingrich 7.5% | Rick Perry 7.2%, Ron Paul 6.6%, Michele Bachmann 3.8%, Jon Huntsman 2.5%, Rick Santorum 2.2% |
| Public Policy Polling Margin of error: ±6.1% Sample size: 255 | Oct. 30–31, 2010 | Mike Huckabee 18% | Newt Gingrich 17% | Sarah Palin 14% | Mitt Romney 12%, Tim Pawlenty 7%, Mitch Daniels 6%, John Thune 2%, Mike Pence 1%, someone else/undecided 23% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Aug. 14–16, 2010 | Newt Gingrich 23% | Mike Huckabee 21% | Sarah Palin 18% | Mitt Romney 16%, Ron Paul 7%, undecided 9%, someone else 7% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jun. 12–13, 2010 | Mike Huckabee 25% | Mitt Romney 25% | Newt Gingrich 23% | Sarah Palin 18%, Ron Paul 5%, undecided 4% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Apr. 1–5, 2010 | Mitt Romney 34% | Mike Huckabee 28% | Sarah Palin 24% | undecided 14% |

### Missouri (March 15–24)

Caucus date: March 17, 2012 Delegates: 52
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Non-binding Primary Turnout: 251,868 | Feb. 7, 2012 | Rick Santorum 55.2% | Mitt Romney 25.3% | Ron Paul 12.2% | Uncommitted 3.9%, Rick Perry 1.0%, Herman Cain 0.9%, Michele Bachmann 0.7%, Jon Huntsman, Jr. 0.4%, Gary Johnson 0.2%, Michael Meehan 0.1%, Keith Drummond 0.1% |
| Public Policy Polling Margin of error: ±3.2% Sample size: 958 | Feb. 6, 2012 | Rick Santorum 45% | Mitt Romney 32% | Ron Paul 19% | Someone else 4% |
| Public Policy Polling Margin of error: ±4.1% Sample size: 574 | Jan. 27–29, 2012 | Newt Gingrich 30% | Rick Santorum 28% | Mitt Romney 24% | Ron Paul 11%, Someone else/Not sure 7% |
| Public Policy Polling Margin of error: ±4.1% Sample size: 574 | Jan. 27–29, 2012 | Rick Santorum 45% | Mitt Romney 34% | Ron Paul 13% | Someone else/Not sure 8% |
| Public Policy Polling Margin of error: ±4.1% Sample size: 574 | Jan. 27–29, 2012 | Newt Gingrich 43% | Mitt Romney 42% | | Not sure 15% |
| Public Policy Polling Margin of error: ±4.1% Sample size: 574 | Jan. 27–29, 2012 | Mitt Romney 60% | Ron Paul 27% | | Not sure 13% |
| Public Policy Polling Margin of error: ±4.1% Sample size: 574 | Jan. 27–29, 2012 | Rick Santorum 50% | Mitt Romney 37% | | Not sure 13% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Sep. 9–12, 2011 | Rick Perry 31% | Mitt Romney 15% | Herman Cain 10% | Newt Gingrich 10%, Michele Bachmann 9%, Ron Paul 8%, Jon Huntsman 2%, Rick Santorum 1%, someone else/not sure 14% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Sep. 9–12, 2011 | Rick Perry 55% | Mitt Romney 27% | not sure 19% | |
| Wilson Perkins Allen Opinion Research Margin of error: ±5.8% Sample size: 284 | Aug. 10–11, 2011 | Mitt Romney 25% | Rick Perry 22% | Michele Bachmann 13% | Newt Gingrich 7%, Herman Cain 6%, Ron Paul 5%, Rick Santorum 2%, Jon Huntsman 1%, Hard Undecided/DK/Refused DNR 20% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Apr. 28 – May 1, 2011 | Mike Huckabee 28% | Mitt Romney 13% | Donald Trump 12% | Newt Gingrich 10%, Michele Bachmann 9%, Sarah Palin 8%, Ron Paul 6%, Tim Pawlenty 5%, someone else/undecided 9% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 3–6, 2011 | Mike Huckabee 29% | Newt Gingrich 19% | Sarah Palin 14% | Mitt Romney 13%, Ron Paul 7%, Mitch Daniels 4%, Tim Pawlenty 3%, Haley Barbour 2%, someone else/undecided 10% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Nov. 29 – Dec. 1, 2010 | Mike Huckabee 27% | Sarah Palin 25% | Newt Gingrich 15% | Mitt Romney 14%, Ron Paul 5%, Tim Pawlenty 3%, John Thune 2%, Mitch Daniels 1%, undecided 9% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Mar. 27–29, 2010 | Mike Huckabee 32% | Sarah Palin 28% | Mitt Romney 22% | undecided 18% |

### Louisiana (March 24)

Winner: Rick Santorum Primary date: March 24, 2012 Delegates: 46
| Poll source | Date | 1st | 2nd | 3rd | Other |
| Primary results Turnout: 186,377 | March 24, 2012 | Rick Santorum 49.0% | Mitt Romney 26.7% | Newt Gingrich 15.91% | Ron Paul 6.15% |
| Public Policy Polling Margin of error: ±3.8% Sample size: 650 | Mar. 21–22, 2012 | Rick Santorum 42% | Mitt Romney 28% | Newt Gingrich 18% | Ron Paul 8%, Buddy Roemer 2%, Someone else/Not sure 2% |
| Public Policy Polling Margin of error: ±3.8% Sample size: 650 | Mar. 21–22, 2012 | Rick Santorum 53% | Mitt Romney 31% | Ron Paul 11% | Not sure 6% |
| American Research Group Margin of error: ±4% Sample size: 600 | Mar. 20–22, 2012 | Rick Santorum 43% | Mitt Romney 27% | Newt Gingrich 20% | Ron Paul 6%, Other 1%, Undecided 3% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Mar. 21, 2012 | Rick Santorum 43% | Mitt Romney 31% | Newt Gingrich 16% | Ron Paul 5%, Some other candidate 1%, Undecided 5% |
| Rasmussen Reports Margin of error: ±4% Sample size: 750 | Mar. 21, 2012 | Rick Santorum 57% | Mitt Romney 37% | – | – |
| Magellan Strategies Margin of error: ±2.18% Sample size: 2,018 | Mar. 19, 2012 | Rick Santorum 37% | Mitt Romney 24% | Newt Gingrich 21% | Buddy Roemer 3%, Ron Paul 3%, Rick Perry 3%, Michele Bachmann 2%, Jon Huntsman 1%, Undecided 6% |
| GCR & Associates/WWL-TV Margin of error: ±4.4% Sample size: 515 | Mar. 8–10, 2012 | Rick Santorum 25.44% | Mitt Romney 20.97% | Newt Gingrich 19.81% | Ron Paul 5.63%, Other 1.94%, Undecided 26.21% |
| Clarus Research Margin of error: ±5.6% Sample size: 300 | Nov. 20–22, 2011 | Newt Gingrich 31% | Mitt Romney 23% | Herman Cain 12% | Rick Perry 11%, Ron Paul 6%, Michele Bachmann 4%, Buddy Roemer 2%, Jon Huntsman 1%, Undecided 10% |
| Clarus Research Margin of error: ±5.6% Sample size: 304 | Oct. 5–7, 2011 | Rick Perry 23% | Herman Cain 21% | Mitt Romney 17% | Newt Gingrich 4%, Ron Paul 4%, Michele Bachmann 3%, Buddy Roemer 3%, Jon Huntsman 1%, Rick Santorum 0% |
| Wilson Perkins Allen Opinion Research Margin of error: ±7.2% Sample size: 183 | Aug. 14–16, 2011 | Rick Perry 30% | Michele Bachmann 16% | Mitt Romney 15% | Newt Gingrich 9%, Ron Paul 6%, Herman Cain 2%, Jon Huntsman 2%, Rick Santorum 1%, Hard Undecided/DK/Refused DNR 19% |
| Public Policy Polling Margin of error: ±5.2% Sample size: 358 | Aug. 21–22, 2010 | Newt Gingrich 25% | Mike Huckabee 24% | Sarah Palin 20% | Mitt Romney 16%, Ron Paul 7%, someone else 2%, undecided 8% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jun. 12–13, 2010 | Newt Gingrich 24% | Mike Huckabee 24% | Sarah Palin 23% | Mitt Romney 14%, Ron Paul 6%, undecided 8% |
| Public Policy Polling Margin of error: ±4.9% Sample size: 400 | Jun. 12–13, 2010 | Bobby Jindal 44% | Newt Gingrich 15% | Mike Huckabee 14% | Sarah Palin 8%, Mitt Romney 6%, Ron Paul 3%, undecided 9% |