Republican presidential candidate, Sen. John McCain, R-Ariz., right, campaigns at Wake Forest University with former Solicitor General Ted Olson, left, and former Senator Fred Thompson Tuesday, May 6, 2008, in Winston-Salem, N.C., as voters in Indiana and North Carolina crowd polls Tuesday to settle the largest remaining contests in the Democratic presidential nomination struggle between Hillary Rodham Clinton and Barack Obama. (AP Photo/Jeff Chiu)
