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,James Oliphant, "Herman Cain drops out of presidential race" (December 3, 2011). Los Angeles Times. 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,Sarah Wheaton, "Bachmann Says She Will Not Continue in the Race" (January 4, 2012). New York Times. 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.Kate O'Hare, "Tim Pawlenty quits after third-place straw-poll finish" (August 14, 2011). Los Angeles Times.Robert J. Vickers, "Pawlenty to headline state GOP meeting" (January 3, 2012). The Patriot-News.

Polling for completed primaries

Iowa (January 3)

Winner: Rick Santorum Caucus date: January 3, 2012 Delegates: 28 Poll source Date 1st 2nd 3rdOther Caucus resultsCaucus results Turnout: 122,255Jan. 3, 2012 Rick Santorum24.6% Mitt Romney24.5% Ron Paul21.5% Newt Gingrich 13.3%, Rick Perry 10.3%, Michele Bachmann 5.0%, Jon Huntsman 0.6%, No Preference 0.1%, Other 0.1%, Herman Cain 0.1%, Buddy Roemer 0.0%InsiderAdvantage /Majority Opinion ResearchInsiderAdvantage / Majority Opinion Research Sample size: 729 Jan. 1, 2012Mitt Romney22.7%Ron Paul22.4% Rick Santorum18% Newt Gingrich 16.1%, Rick Perry 9.6%, Michele Bachmann 5.8%, Jon Huntsman 1.8%, Someone Else 1.3%, No Opinion 2.3%Public Policy PollingPublic Policy Polling Margin of error: ±2.7% Sample size: 1,340 Dec. 31, 2011 – Jan. 1, 2012Ron Paul20%Mitt Romney19%Rick Santorum18% Newt Gingrich 14%, Rick Perry 10%, Michele Bachmann 8%, Jon Huntsman 4%, Buddy Roemer 2%, Other 4%American Research GroupAmerican Research Group Margin of error: 4% Sample size: 600 Dec. 29 – Jan. 1, 2012Mitt Romney22% Ron Paul17% Rick Santorum16% Newt Gingrich 15%, Rick Perry 9%, Michele Bachmann 8%, Jon Huntsman 4%, Buddy Roemer 1%, Someone Else 1%, Undecided 7%Des Moines RegisterDes Moines Register Margin of error: ±4% Sample size: 602 Dec. 27–30, 2011Mitt Romney24%Ron Paul22% Rick Santorum15% Newt Gingrich 12%, Rick Perry 11%, Michele Bachmann 7%, Jon Huntsman 2%We Ask AmericaWe Ask America Margin of error: Sample size: 889 Dec. 29, 2011Mitt Romney24% Rick Santorum17% Ron Paul14% Newt Gingrich 13%, Michele Bachmann 12%, Rick Perry 10%, Jon Huntsman 4%, Undecided 7%InsiderAdvantage /Majority Opinion ResearchInsiderAdvantage / Majority Opinion Research Margin of error: ±4.7% Sample size: 429 Dec. 28, 2011Ron Paul17.3%Mitt Romney17.2%Newt Gingrich16.7% Rick Santorum 13.4%, Michele Bachmann 11.8%, Rick Perry 10.5%, Jon Huntsman 2.8%, Someone else 3%, no opinion 7.3%RasmussenRasmussen Margin of error: ±4% Sample size: 750 Dec. 28, 2011Mitt Romney23%Ron Paul22% Rick Santorum16% Newt Gingrich 13%, Rick Perry 13%, Michele Bachmann 5%, Jon Huntsman 3%, Someone else 1%, Undecided 6%NBC News/MaristNBC News/Marist Margin of error: ±4.7% Sample size: 433 Dec. 27–28, 2011Mitt Romney23%Ron Paul21% Rick Santorum15% Rick Perry 14%, Newt Gingrich 13%, Michele Bachmann 6%, Jon Huntsman 2%, Undecided 7%American Research GroupAmerican Research Group Margin of error: ±4% Sample size: 600 Dec. 26–28, 2011Mitt Romney22%Newt Gingrich17%Ron Paul16% Rick Santorum 11%, Rick Perry 9%, Michele Bachmann 8%, Jon Huntsman 6%, Buddy Roemer 1%Public Policy PollingPublic Policy Polling Margin of error: ±4.1% Sample size: 565 Dec. 26–27, 2011Ron Paul24%Mitt Romney20% Newt Gingrich13% Michele Bachmann 11%, Rick Perry 10%, Rick Santorum 10%, Jon Huntsman 4%, Buddy Roemer 2%, Someone else/Not sure 5%CNN/Time MagazineCNN/Time Magazine Margin of error: ±4.5% Sample size: 452 Dec. 21–27, 2011Mitt Romney25%Ron Paul22% Rick Santorum16% Newt Gingrich 14%, Rick Perry 11%, Michele Bachmann 9%, Jon Huntsman 1%, No opinion 2%American Research GroupAmerican Research Group Margin of error: ±4% Sample size: 600 Dec. 19–22, 2011Ron Paul21%Mitt Romney20%Newt Gingrich19% Rick Perry 9%, Michele Bachmann 8%, Jon Huntsman 6%, Rick Santorum 4%, Buddy Roemer 1%We Ask AmericaWe Ask America Margin of error: ±2.8% Sample size: 1,250 Dec. 20, 2011Ron Paul19%Mitt Romney18% Newt Gingrich16% Michele Bachmann 15%, Rick Perry 11%, Rick Santorum 9%, Jon Huntsman 4%, Uncertain 8%Rasmussen ReportsRasmussen Reports Margin of error: ±4% Sample size: 750 Dec. 19, 2011Mitt Romney25% Ron Paul20% Newt Gingrich17% Rick Perry 10%, Rick Santorum 10%, Michele Bachmann 6%, Jon Huntsman 4%, Not sure 8%, Other 1%InsiderAdvantage /Majority Opinion ResearchInsiderAdvantage / Majority Opinion Research Margin of error: ±5.7% Sample size: 391 Dec. 18, 2011Ron Paul23.9%Mitt Romney18.2% Rick Perry15.5% Newt Gingrich 12.9%, Michele Bachmann 10.1%, Jon Huntsman 3.8%, Rick Santorum 2.9%, Someone else 0.8%, No opinion 11.9%Public Policy PollingPublic Policy Polling Margin of error: ±4% Sample size: 597 Dec. 16–18, 2011Ron Paul23%Mitt Romney20% Newt Gingrich14% Michele Bachmann 10%, Rick Perry 10%, Rick Santorum 10%, Jon Huntsman 4%, Gary Johnson 2%, Someone else/not sure 7%Iowa State University /Cedar Rapids Gazette /KCRGIowa State University / Cedar Rapids Gazette / KCRG Margin of error: ±5% Sample size: 940 Dec. 8–18, 2011Ron Paul27.5%Newt Gingrich25.3% Mitt Romney17.5% Rick Perry 11.2%, Michele Bachmann 7.4%, Rick Santorum 4.9%, Herman Cain 0.4%, Jon Huntsman 0.3%, Can't decide 5.4%RasmussenRasmussen Margin of error: ±4% Sample size: 750 Dec. 13, 2011Mitt Romney23%Newt Gingrich20% Ron Paul18% Rick Perry 10%, Michele Bachmann 9%, Rick Santorum 6%, Jon Huntsman 5%, Not sure 8%, Other 2%Public Policy PollingPublic Policy Polling Margin of error: ±4.2% Sample size: 555 Dec. 11–13, 2011Newt Gingrich22%Ron Paul21% Mitt Romney16% Michele Bachmann 11%, Rick Perry 9%, Rick Santorum 8%, Jon Huntsman 5%, Gary Johnson 1%, Someone else/Not sure 7%InsiderAdvantage /Majority Opinion ResearchInsiderAdvantage / Majority Opinion Research Margin of error: Sample size: 517 Dec. 12, 2011 Newt Gingrich27.1% Ron Paul16.5% Rick Perry13.2% Mitt Romney 11.9%, Michele Bachmann 10.3%, Rick Santorum 6.8%, Jon Huntsman 3.6%, Someone else 1.4%, No opinion 9.2%American Research GroupAmerican Research Group Margin of error: ±4% Sample size: 600 Dec. 8–11, 2011Newt Gingrich22% Ron Paul17% Mitt Romney17% Rick Perry 13%, Michele Bachmann 7%, Rick Santorum 7%, Jon Huntsman 5%, Other 1%, Undecided 12%University of Iowa HawkeyeUniversity of Iowa Hawkeye Margin of error: ±6% Sample size: 277 Nov. 30 – Dec. 7, 2011Newt Gingrich29.8% Mitt Romney20.3% Ron Paul10.7% Michele Bachmann 8.5%, Rick Perry 8.2%, Rick Santorum 5.3%, Herman Cain 4.4%, Jon Huntsman 1.5%, Someone else 0.9%, Don't know/refused 10.5%CNN /Time MagazineCNN / Time Magazine Margin of error: ±5% Sample size: 419 Nov. 29 – Dec. 6, 2011Newt Gingrich33% Mitt Romney20% Ron Paul17% Rick Perry 9%, Michele Bachmann 7%, Rick Santorum 5%, Jon Huntsman 1%, None 2%, No Opinion 5%CBS News /New York TimesCBS News / New York Times Margin of error: ±4% Sample size: 1,869 Nov. 30 – Dec. 5, 2011Newt Gingrich31% Mitt Romney17% Ron Paul16% Rick Perry 11%, Michele Bachmann 9%, Rick Santorum 4%, Jon Huntsman 1%Newt Gingrich28% Mitt Romney18% Ron Paul14% Rick Perry 10%, Herman Cain 7%, Michele Bachmann 4%, Rick Santorum 4%, Jon Huntsman 1%, someone else 1%, undecided 10%, no/no one 1%, don't know/no answer 2%Public Policy PollingPublic Policy Polling Margin of error: ±4.1% Sample size: 572 Dec. 3–5, 2011Newt Gingrich27% Ron Paul18% Mitt Romney16% Michele Bachmann 13%, Rick Perry 9%, Rick Santorum 6%, Jon Huntsman 4%, Gary Johnson 1%, Someone else/Not sure 7%We Ask AmericaWe Ask America Margin of error: ±3.15% Sample size: 970 Dec. 5, 2011Newt Gingrich30% Mitt Romney16% Ron Paul14% Michele Bachmann 13%, Rick Perry 7%, Rick Santorum 4%, Jon Huntsman 3%, someone else 1%, undecided 6%, no/no one 2%, don't know/no answer 2%ABC News/Washington PostABC News / Washington Post Margin of error: ±6% Sample size: 356 Nov. 30 – Dec. 4, 2011Newt Gingrich33% Ron Paul18% Mitt Romney18% Rick Perry 11%, Michele Bachmann 8%, Rick Santorum 7%, Jon Huntsman 2%, None of these 1%, Would not vote 0%, No opinion 3%The Des Moines RegisterThe Des Moines Register Margin of error: ±4.9% Sample size: 401 Nov. 27–30, 2011Newt Gingrich25% Ron Paul18% Mitt Romney16% Michele Bachmann 8%, Herman Cain 8%, Rick Perry 6%, Rick Santorum 6%, Jon Huntsman 2%, Uncommitted 11%NBC News/MaristNBC News/Marist Margin of error: ±4.8% Sample size: 425 (Likely caucus-goers) Nov. 27–29, 2011Newt Gingrich26% Mitt Romney18% Ron Paul17% Herman Cain 9%, Rick Perry 9%, Michele Bachmann 5%, Rick Santorum 5%, Jon Huntsman 2%, Undecided 9%Newt Gingrich28% Ron Paul19% Mitt Romney19% Rick Perry 10%, Michele Bachmann 7%, Rick Santorum 6%, Jon Huntsman 2%, Undecided 9%NBC News/MaristNBC News/Marist Margin of error: ±3.2% Sample size: 916 (Potential caucus-goers)Newt Gingrich25% Mitt Romney18% Ron Paul16% Herman Cain 9%, Rick Perry 9%, Michele Bachmann 5%, Rick Santorum 4%, Jon Huntsman 2%, Undecided 11%We Ask America Margin of error: ±3.16% Sample size: 962 Nov. 28, 2011 Newt Gingrich29% Michele Bachmann13% Mitt Romney13% Ron Paul 11%, Herman Cain 7%, Rick Perry 5%, Rick Santorum 5%, Jon Huntsman 4%, Uncertain 13%American Research GroupAmerican Research Group Margin of error: ±4% Sample size: 600 Nov. 17–23, 2011Newt Gingrich27% Mitt Romney20% Ron Paul16% Michele Bachmann 6%, Herman Cain 6%, Rick Santorum 6%, Rick Perry 5%, Jon Huntsman 3% Undecided 11%Rasmussen ReportsRasmussen Reports Margin of error: ±4% Sample size: 800 Nov. 16, 2011Newt Gingrich32% Mitt Romney19% Herman Cain13% Ron Paul 10%, Michele Bachmann 6%, Rick Perry 6%, Rick Santorum 5%, Jon Huntsman 2%, Other 1%, Undecided 6%Iowa State University /Gazette /KCRGIowa State University / Gazette / KCRG Margin of error: ±5% Sample size: 1,256 Nov. 1–13, 2011Herman Cain24.5%Ron Paul20.4% Mitt Romney16.3% Rick Perry 7.9%, Michele Bachmann 7.6%, Newt Gingrich 4.8%, Rick Santorum 4.7%, Jon Huntsman 0%, Can't decide 8.1%The Polling CompanyThe Polling Company Margin of error: ±4.4% Sample size: 501 Nov. 11–13, 2011Herman Cain20%Newt Gingrich19% Mitt Romney14% Michele Bachmann 10%, Ron Paul 10%, Rick Perry 5%, Rick Santorum 4%, Jon Huntsman 2%, Gary Johnson 1%, Refused 1%, Undecided 13%Bloomberg NewsBloomberg News Margin of error: ±4.4% Sample size: 503 Nov. 10–12, 2011Herman Cain20%Ron Paul19%Mitt Romney18% Newt Gingrich 17%, Rick Perry 7%, Michele Bachmann 5%, Rick Santorum 3%, Jon Huntsman 1%, Not sure 10%We Ask AmericaWe Ask America Margin of error: ±3.33%