Vice President Joe Biden speaks after a welcoming ceremony at the Great Hall of the People in Beijing Wednesday. Biden met with China's president to discuss issues that include China's recent claim of an air defense zone. Lintao Zhang/Getty Images hide caption

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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

itoggle caption Jose Luis Magana/Thanassis Stavrakis/AP

Vice President Joe Biden poses with an uncooperative baby at a speech in Tallahassee, Fla., on Feb. 6. On Thursday, he's in Ohio to begin a series of speeches aimed at framing the presidential race. Phil Sears/AP hide caption

itoggle caption Phil Sears/AP