FILE - Republican vice presidential nominee Rep. Paul Ryan of Wisconsin and Vice President Joe Biden pass each other after the vice presidential debate at Centre College, in this Oct. 1

 

              FILE - Republican vice presidential nominee Rep. Paul Ryan of Wisconsin and Vice President Joe Biden pass each other after the vice presidential debate at Centre College, in this Oct. 1
FILE - Republican vice presidential nominee Rep. Paul Ryan of Wisconsin and Vice President Joe Biden pass each other after the vice presidential debate at Centre College, in this Oct. 11, 2012 file photo taken in Danville, Ky. The Supreme Court came up during the debate when moderator Martha Raddatz asked about abortion. The last time the Supreme Court was a real campaign issue was Richard Nixon's law-and-order campaign in 1968. (AP Photo/Charlie Neibergall, File)