Florida Poll Released by Rasmussen Reports: Barack Obama 39%, Hillary Clinton 55%

Florida Poll: Hillary Clinton 55%, Barack Obama 39%.

Michigan Poll Released by Rasmussen Reports: Barack Obama 41%, Hillary Clinton 41%

Michigan Poll: Hillary Clinton 41%, Barack Obama 41%.

Mississippi Poll Released by Insider Advantage: Barack Obama 46%, Hillary Clinton 40%

Mississippi Poll: Hillary Clinton 40%, Barack Obama 46%.

Mississippi Poll Released by American Research Group: Barack Obama 58%, Hillary Clinton 34%

Mississippi Poll: Hillary Clinton 34%, Barack Obama 58%.

Samantha Power Apologizes for Calling Clinton A "Monster"

Samantha Power Apologizes for Calling Clinton A "Monster"

North Carolina Poll Released by Public Policy Polling: Barack Obama 47%, Hillary Clinton 43%

North Carolina Poll: Hillary Clinton 43%, Barack Obama 47%.

Pennsylvania Poll Released by Rasmussen Reports: Barack Obama 37%, Hillary Clinton 52%

Pennsylvania Poll: Hillary Clinton 52%, Barack Obama 37%.

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Ron Paul to End Republican Presidential Run

Ron Paul to End Republican Presidential Run

Kevin Johnson To Run for Mayor in Sacramento

Kevin Johnson To Run for Mayor in Sacramento

President George W. Bush Endorses Sen. John McCain

President George W. Bush Endorses Sen. John McCain

John McCain Clinches Republican Presidential Nomination

Mike Huckabee Drops Out, Endorses McCain

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Hillary Clinton Back on Track, Takes Three of Four from Barack Obama

Hillary Clinton Back on Track, Takes Three of Four from Barack Obama

Texas Poll Released by IVR Polls (IVRPolls.com): Barack Obama 46%, Hillary Clinton 49%

Texas Poll: Hillary Clinton 49%, Barack Obama 46%.

Texas Poll Released by WFAA / Belo Tracking Poll: Barack Obama 45%, Hillary Clinton 46%

Texas Poll: Hillary Clinton 46%, Barack Obama 45%.

Texas Poll Released by InsiderAdvantage/Majority Opinion Research: Barack Obama 44%, Hillary Clinton 49%

Texas Poll: Hillary Clinton 49%, Barack Obama 44%.

Texas Poll Released by Reuters/C Span/Houston Chronicle: Barack Obama 44%, Hillary Clinton 47%

Texas Poll: Hillary Clinton 47%, Barack Obama 44%.

Texas Poll Released by American Research Group: Barack Obama 47%, Hillary Clinton 50%

Texas Poll: Hillary Clinton 50%, Barack Obama 47%.

Ohio Poll Released by Reuters/C Span/Houston Chronicle: Barack Obama 44%, Hillary Clinton 44%

Ohio Poll: Hillary Clinton 44%, Barack Obama 44%.

Ohio Poll Released by American Research Group: Barack Obama 42%, Hillary Clinton 56%

Ohio Poll: Hillary Clinton 56%, Barack Obama 42%.

John McCain Leads Texas Poll Released by WFAA / Belo Tracking Poll

Texas Poll: Mike Huckabee 35%, John McCain 55%, Ron Paul 5%.