
Republican vice presidential nominee, Rep. Paul Ryan waves toward his family seen on the television monitor during the Republican National Convention in Tampa, Fla., on Wednesday, Aug. 29, 2012. (AP Photo/J. Scott Applewhite)

Republican vice presidential nominee, Rep. Paul Ryan waves before speaking to delegates during the Republican National Convention in Tampa, Fla., on Wednesday, Aug. 29, 2012. (AP Photo/Charlie Neibergall)

Republican vice presidential nominee Paul Ryan waves Aug. 29, 2012, before speaking to delegates during the Republican National Convention in Tampa, Fla. (Associated Press)

Vice President Joseph R. Biden, seen here campaigning in Virginia earlier this month, said, “The Etch A Sketch is gone,” after Republican presidential nominee Mitt Romney tapped Rep. Paul Ryan to be Mr. Biden’s vice presidential rival. (Associated Press)

Republican vice presidential nominee, Rep. Paul Ryan of Wisconsin walks across the stage with sons Sam, left, Charlie, right, and daughter Liza during a podium sound check at the Republican National Convention in Tampa, Fla., on Wednesday, Aug. 29, 2012. (AP Photo/Charles Dharapak)

Republican vice presidential nominee, Rep. Paul Ryan of Wisconsin walks across the stage with sons Sam, left, Charlie, right, and daughter Liza during a podium sound check at the Republican National Convention in Tampa, Fla., on Wednesday, Aug. 29, 2012. (AP Photo/Charles Dharapak)

Vice President Joseph R. Biden, seen here campaigning in Virginia earlier this month, said, “The Etch A Sketch is gone,” after Republican presidential nominee Mitt Romney tapped Rep. Paul Ryan to be Mr. Biden’s vice presidential rival. (Associated Press)

John Gio Karis, a Republican National Committee volunteer from Chicago, Ill., uses his phone to photograph a photo of Mitt Romney and Rep. Paul Ryan at the Republican National Convention at the Tampa Bay Times Forum in Tampa, Fla. on Wednesday, August 29, 2012. (Andrew Harnik/ The Washington Times)

Republican vice presidential candidate, Rep. Paul Ryan, R-Wis., and wife Janna appear on stage at the Wisconsin delegation's Beers and Brats event, Wednesday, Aug. 29, 2012, in Tampa, Fla. (AP Photo/Mary Altaffer)