Balloons fall at the 2012 Republican National Convention in Tampa, Fla. This year's convention in Cleveland is likely to be far more complicated. Charles Dharapak/AP hide caption

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Can A Candidate Pay Delegates? Plus, 3 Possible GOP Convention Scenarios
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Donald Trump takes part in a CNN town hall event in Milwaukee on Tuesday. Darren Hauck/Getty Images hide caption

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Why Donald Trump Reversed His Pledge To Support The GOP Nominee
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Police stand guard during demonstrations in reaction to a Cleveland police officer being acquitted of manslaughter charges on May 23, 2015, in Cleveland. Ricky Rhodes/Getty Images hide caption

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Cleveland Readies For Protests Ahead Of Potentially Volatile GOP Convention
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Former GOP presidential nominee Mitt Romney struggled to distance himself from the health care program he implemented in Massachusetts. Now he has acknowledged it was a precursor to Obamacare. Gregory Bull/AP hide caption

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President Obama walks to the podium at his 2008 nominating convention. Lawmakers are inserting into the spending bill a provision allowing political parties to collect up to $97,200 from each donor to pay for their conventions. Chuck Kennedy,Scott Andrews/AP hide caption

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In Spending Bill, A Gift For Political Party Fundraising
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Rep. Justin Amash of Michigan, a libertarian Republican, says recent surveillance leaks have "brought home" libertarian ideas. J. Scott Applewhite/AP hide caption

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Amid Struggle For 'Soul' Of GOP, Libertarians Take Limelight
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Cristina Saralegui waves at the Democratic National Convention in Charlotte, N.C., on Wednesday. Joe Raedle/Getty Images hide caption

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South Dakota Sen. John Thune waves to delegates during the Republican National Convention in Tampa, Fla., on Wednesday. J. Scott Applewhite/AP hide caption

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The Republican ticket: Mitt Romney (left) and Rep. Paul Ryan wave as the 2012 Republican National Convention winds up Thursday in Tampa, Fla. Romney accepted the party's presidential nomination. Ryan is his running mate. Joe Raedle/Getty Images hide caption

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NPR Special Coverage, Hour 1
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NPR's Cheryl Corley and producer Brakkton Booker followed Tuesday's Republican National Convention events with a trip to Tampa's trendy Ybor City neighborhood. Brakkton Booker/NPR hide caption

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As Convention Day Winds Down, Tampa Hosts Republican (And Other) Parties
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Republican vice presidential candidate, Rep. Paul Ryan waves with his family Wednesday at the GOP convention in Tampa. Also on stage: his daughter Liza, sons Charlie and Sam Ryan, wife Janna and mother Elizabeth. Win McNamee/Getty Images hide caption

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NPR Special Coverage, Hour 1
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Former Democratic Rep. Artur Davis spoke Tuesday at the Republican National Convention: "Some of you may know," he said, "the last time I spoke at a convention, it turned out I was in the wrong place." J. Scott Applewhite/AP hide caption

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South Carolina Gov. Nikki Haley speaks Tuesday at the Republican National Convention in Tampa, Fla. Earlier in the day, she said: "It's offensive to me as a woman and as a minority that Democrats can go and say, 'That party hates you,' and can get away with that." Mark Wilson/Getty Images hide caption

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Rep. Paul Ryan of Wisconsin, seen at a weekend rally in Powell, Ohio, is set to formally accept the GOP nomination to become Mitt Romney's running mate. Jewel Samad/AFP/Getty Images hide caption

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Ann Romney is hugged by her husband, Mitt, after she addressed delegates during the Republican National Convention in Tampa, Fla., on Tuesday. Rick Wilking/Reuters/Landov hide caption

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Ann Romney is expected to play more of a traditional "first lady" role in tonight's address, while N.J. Gov. Chris Christie will likely throw some punches at the Obama administration. Getty Images hide caption

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Final preparations were under way Monday for the opening of the Republican National Convention in Tampa, Fla. Democrats are holding their convention next week in Charlotte, N.C. Stan Honda/AFP/Getty Images hide caption

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The Republican message: Workers were putting up a sign Sunday inside the Tampa Bay Times Forum, where the 2012 Republican National Convention is set to begin. Scott Olson/Getty Images hide caption

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