Vice President Joe Biden speaks as Republican Rep. Paul Ryan and moderator Martha Raddatz listen during the vice presidential debate at Centre College on Thursday in Danville, Ky. Michael Reynolds/Pool/Getty Images hide caption

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Tonight's faceoff between Vice President Joe Biden (right) and GOP Rep. Paul Ryan of Wisconsin will likely be an important stage-setter for next week's second presidential debate. Jose Luis Magana/Thanassis Stavrakis/AP hide caption

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Rep. Paul Ryan, the GOP vice presidential nominee, became a speech writer for the conservative Republican politician Jack Kemp after graduating from college in 1992. J. Scott Applewhite/AP 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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Rep. Todd Akin, R-Mo., and his wife Lulli, talk with reporters last Thursday at the Missouri State Fair in Sedalia, Mo. On Monday, Akin was resisting GOP calls to resign from his Senate race. Orlin Wagner/AP hide caption

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Rep. Paul Ryan greets supporters during a campaign rally Sunday in Waukesha, Wis. Saul Loeb/AFP/Getty Images hide caption

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Rep. Paul Ryan, R-Wis., points to piles of the health care overhaul legislation during a markup hearing before the U.S. House Budget Committee last year in Washington, D.C. Alex Wong/Getty Images hide caption

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