Lt. Dan Choi, center, stands with other protesters after handcuffing themselves to the fence outside the White House in Washington, Monday, Nov. 15, 2010, during a protest for gay-rights. The group demanded that President Obama keep his promise to repeal 'Don't Ask, Don't Tell'. Pablo Martinez Monsivais/AP hide caption

March 5, 2008 at the White House: President George W. Bush endorses the presidential bid of fellow Republican Sen. John McCain of Arizona. Gerald Herbert/AP hide caption

Former Massachusetts Gov. Mitt Romney speaks to the Values Voter Summit, held by the Family Research Council Action, Friday, Sept. 17, 2010, in Washington.  Jacquelyn Martin/Associated Press hide caption

Democratic Sen. Blanche Lincoln of Arkansas must survive a runoff to be on her party's ballot in November. Mark Wilson/Getty Images hide caption