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 HighlightsAmerican Research GroupAmerican Research Group Sample Size: 600 LV Margin of Error: ± 4% March 9–10, 2008 Obama 54%, Clinton 38%, Other 4%, Undecided 4%InsiderAdvantage/Majority OpinionInsiderAdvantage/Majority Opinion Sample Size: 338 Margin of Error: ± 6%March 9, 2008 Obama 54%, Clinton 37%, Undecided 9%InsiderAdvantageInsiderAdvantage Sample Size: 412 Margin of Error: ± 5%March 6, 2008 Obama 46%, Clinton 40%, Undecided 14%American Research GroupAmerican Research Group Sample Size: 600 LV Margin of Error: ± 4% March 5–6, 2008 Obama 58%, Clinton 34%, Other 5%, Undecided 3%Rasmussen ReportsRasmussen 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 HighlightsAmerican Research GroupAmerican Research Group Sample Size: 600 Margin of Error: ±4%March 2–3, 2008Clinton 56%, Obama 42%, Someone else 1%, Undecided 1%Zogby Sample Size: 828 Margin of Error: ±3.4%March 1–3, 2008Obama 44%, Clinton 44%, Gravel 1%, Someone else 3%, Not sure 8%Rasmussen ReportsRasmussen Reports Sample Size: 858 Margin of Error: ±3%March 2, 2008Clinton 50%, Obama 44%, Undecided 6%Survey USASurvey USA Sample Size: 873 Margin of Error: ±3.4%March 1–2, 2008Clinton 54%, Obama 44%, Other 1%, Undecided 1%Public Policy PollingPublic Policy Polling Sample Size: 1112 Margin of Error: ±2.9%March 1–2, 2008Clinton 51%, Obama 42%, Undecided 7%Suffolk UniversitySuffolk University Sample Size: 400March 1–2, 2008Clinton 52%, Obama 40%, Undecided 8%Zogby Sample Size: 761 Margin of Error: ±3.6%February 29 – March 2, 2008Obama 47%, Clinton 45%, Gravel 1%, Someone else 2%, Not sure 6%University of CincinnatiUniversity of Cincinnati Sample Size: 624 Margin of Error: ±3.9%February 28 – March 2, 2008Clinton 51.3%, Obama 42.3%, Edwards 6.0%, Other 0.4%Quinnipiac UniversityQuinnipiac University Sample Size: 799 Margin of Error: ±3.5%February 27 – March 2, 2008Clinton 49%, Obama 45%, Undecided 6%American Research GroupAmerican Research Group Sample Size: 600 Margin of Error: ±4%February 29 – March 1, 2008Clinton 51%, Obama 44%, Other 1%, Undecided 4%ZogbyZogby 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-DixonMason-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 DispatchColumbus Dispatch Sample Size: 2,308 Margin of Error:February 21–29, 2008 Clinton 56%, Obama 40%Rasmussen ReportsRasmussen Reports Sample Size: 851 Margin of Error: ± 3.8%February 28, 2008 Clinton 47%, Obama 45%, Undecided 9%American Research GroupAmerican Research Group Sample Size: 600 Margin of Error: ±4%February 27–28, 2008Clinton 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 ReportsRasmussen Reports Sample Size: 862 Margin of Error: ± 3.8%February 26–28, 2008 Clinton 48%, Obama 43%, Undecided 9%SurveyUSASurveyUSA Sample Size: 790 Margin of Error: ±3.6%February 23–25, 2008Clinton 50%, Obama 44%, Other 3%, Undecided 3%Public Policy PollingPublic Policy Polling Sample Size: 600 Margin of Error: ±4%February 23–24, 2008Clinton 50%, Obama 46%, Undecided 4%American Research GroupAmerican Research Group Sample Size: 600 Margin of Error: ±4%February 23–24, 2008Clinton 49%, Obama 39%, Other 4%, Undecided 8%Institute of Policy Research at the University of CincinnatiInstitute of Policy Research at the University of Cincinnati Sample Size: 529 Margin of Error: ±4.3%February 21–24, 2008Clinton 47%, Obama 39%, Edwards 9%, Other 2%, Undecided 4%Quinnipiac UniversityQuinnipiac University Sample Size: 741 Margin of Error: ±3.6%February 18–23, 2008Clinton 51%, Obama 40%, Other 1%, Undecided 9%Decision AnalystDecision Analyst Sample Size: 735 Margin of Error: ± 3% February 21–22, 2008 Obama 54%, Clinton 46%Rasmussen ReportsRasmussen Reports Sample Size: 902 Margin of Error: ± 3%February 21, 2008 Clinton 48%, Obama 40%, Undecided 12%Washington Post-ABC NewsWashington 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%SurveyUSASurveyUSA Sample Size: 733 LV Margin of Error: ±3.7%February 17–18, 2008Clinton 52%, Obama 43%, Other 4%, Undecided 1%Rasmussen ReportsRasmussen Reports Sample Size: 754 LV Margin of Error: ±4%February 13, 2008Clinton 51%, Obama 37%, Undecided 12%Quinnipiac UniversityQuinnipiac University Sample Size: 564 Margin of Error: ±4.1%February 6–12, 2008Clinton 55%, Obama 34%, Other 2%, Undecided 9%SurveyUSASurveyUSA Sample Size: 720 Margin of Error: ±3.7%February 10–11, 2008Clinton 56%, Obama 39%, Other 3%, Undecided 2%Columbus DispatchColumbus Dispatch Sample Size: 2,156 Margin of Error: ±2%January 23–31, 2008Clinton 42%, Obama 19%, Edwards 18%, Kucinich 1%, Undecided 20%Opinion ConsultantsOpinion 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 VisionStrategic 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 UniversityQuinnipiac 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 UniversityQuinnipiac 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 UniversityQuinnipiac 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 UniversityQuinnipiac 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 determinedSee also

Poll source Date HighlightsBrown University PollBrown 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 WPRI 12 / RIPolitics.TV Sample Size: 401 Margin of Error: ± 5% February 24–27, 2008 Clinton 49%, Obama 40%, Not Sure 11%RasmussenRasmussen Sample Size: 1,035 Margin of Error: ± 3.5% February 23, 2008 Clinton 53%, Obama 38%, Undecided 9%American Research GroupAmerican Research Group Sample Size: 600 Margin of Error: ± 4% February 20–21, 2008 Clinton 52%, Obama 40%, someone else 1%, undecided 7%Brown University PollBrown University Poll Sampling Size: 474 Margin of Error: ±5% February 9–10, 2008 Clinton 36%, Obama 28%, uncommitted 27%, undecided 9%Brown University PollBrown 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 PollBrown 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 determinedSee also

Poll source Date HighlightsAmerican Research GroupAmerican Research Group Sample Size: 600 Margin of Error: ±4%March 2–3, 2008Clinton 50%, Obama 47%, Someone else 1%, Undecided 2%Zogby Sample Size: 855 Margin of Error: ±3.4%March 1–3, 2008Clinton 47%, Obama 44%, Gravel 1%, Someone else 2%, Not sure 7%Insider Advantage/Majority OpinionInsider Advantage/Majority Opinion Sample Size: 609March 2, 2008Clinton 49%, Obama 44%, Not sure 7%Rasmussen ReportsRasmussen Reports Sample Size: 858 Margin of Error: ±3%March 2, 2008Obama 48%, Clinton 47%, Undecided 6%SurveyUSASurveyUSA Sample Size: 840 Margin of Error: ±3.5%March 1–2, 2008Obama 49%, Clinton 48%, Other 2%, Undecided 2%Public Policy PollingPublic Policy Polling Sample Size: 755 Margin of Error: ± 3.6%March 1–2, 2008Clinton 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 PollsIVR Polls Sample Size: 1162 Margin of Error: ± 2.9% February 28 – March 2, 2008 Clinton 49%, Obama 46%American Research GroupAmerican Research Group Sample Size: 600 Margin of Error: ± 4% February 29 – March 1, 2008 Obama 47%, Clinton 47%, Other 2%, Undecided 4%fPublic Strategies/WFAA Dallas/BELO Corp.Public Strategies/WFAA Dallas/BELO Corp. Sample Size: 730 LV Margin of Error: ± 3.6% February 28 – March 1, 2008Obama 46%, Clinton 46%, Not sure 8%ZogbyZogby Sample Size: 736 LV Margin of Error: ± 3.7% February 28 – March 1, 2008Obama 47%, Clinton 43%, Gravel 1%, Someone Else, 2%, Not sure 7%Mason-DixonMason-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 AdvantageInsider Advantage Sample Size: 591 February 28, 2008 Clinton 47%, Obama 43%, Undecided 10%American Research GroupAmerican 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 DynamicsFox 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 ReportsRasmussen Reports Sample Size: 503 Margin of Error: ± 4% February 27, 2008 Obama 48%, Clinton 44%, Undecided 8%Public Strategies/WFAA DallasPublic Strategies/WFAA Dallas