Mike Huckabee, left, sits with RNC Chairman Reince Priebus before Huckabee spoke at the Republican National Committee winter meeting in Washington on Thursday, Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

Republican Ed Gillespie announced Thursday that he's challenging Democratic Virginia Sen. Mark Warner in November's election. Gillespie, a senior adviser to Republican Mitt Romney in the 2012 presidential race, is shown here at Romney's election night rally in Boston on Nov. 6, 2012. Mike Segar/Reuters/Landov hide caption

itoggle caption Mike Segar/Reuters/Landov

Trish Gallagher holds a sign for passing motorists to read during a demonstration in support of a higher minimum wage near a Burger King in Boston on Dec. 5. Massachusetts is one of several states considering a minimum wage ballot measure. BRIAN SNYDER/Reuters/Landov hide caption

itoggle caption BRIAN SNYDER/Reuters/Landov

Republican Sen. Marco Rubio of Florida delivers a speech on reforming antipoverty programs on the 50th Anniversary of President Johnson's declaration of the "War on Poverty." Kevin Dietsch/UPI/Landov hide caption

itoggle caption Kevin Dietsch/UPI/Landov

Sen. Rand Paul (R-Ky.) greets supporters during a tea party rally in front of the U.S. Capitol in June. Paul was a rising star in the tea party movement this year, filibustering a CIA nomination in March. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

An auto worker tightens bolts on a Focus at a Ford plant in Michigan in October. Labor unions predicted in 1993 that NAFTA would send many U.S. manufacturing jobs to Mexico, and they continue to argue that the pact prompted a race to the bottom for workers. Mira Oberman/AFP/Getty Images hide caption

itoggle caption Mira Oberman/AFP/Getty Images

Rep. Darrell Issa, a California Republican and chairman of the House Oversight and Government Reform Committee, planned to hold at least four field hearings on the Affordable Care Act, which he blames for increased health insurance prices. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Supporters may be "Ready for Hillary," but NPR political reporter Don Gonyea isn't. Kevork Djansezian/Getty Images hide caption

itoggle caption Kevork Djansezian/Getty Images

Mayor-elect Mike Duggan speaks at his election night celebration in Detroit on Tuesday. Paul Sancya/AP hide caption

itoggle caption Paul Sancya/AP

From left, Rep. Lee Terry, R-Neb., Rep. Bill Shuster, R-Pa., and House Majority Whip Kevin McCarthy, R-Calif., walk to the floor of the House for the final series of votes on a bill to fund the government, in Washington on Sept. 28. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Sal Russo of the Tea Party Express speaks at the National Press Club in 2011. Russo predicts the Tea Party will be re-energized for the 2014 midterm elections. Alex Brandon/AP hide caption

itoggle caption Alex Brandon/AP

Kathleen Sebelius stands with Sen. Pat Roberts (right), R-Kan., and former Senate Majority Leader Bob Dole in 2009. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP