New Jersey Gov. Chris Christie greets supporters on the eve of the election in a race that looks like a launchpad for a 2016 presidential run. Mel Evans/AP hide caption

itoggle caption Mel Evans/AP

Vice President Biden is greeted by Rep. Gerald Connolly, D-Va., before speaking at a backyard rally for Virginia Democratic gubernatorial candidate Terry McAuliffe on Monday. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP

Ken Cuccinelli, the Republican nominee for Virginia governor, (left), is trailing Democratic opponent Terry McAuliffe (right) among female voters. Steve Helber/AP hide caption

itoggle caption Steve Helber/AP

The increasingly negative campaign that is the Virginia race for governor between Republican Ken Cuccinelli (left) and Democrat Terry McAuliffe could keep some voters home. Steve Helber/AP hide caption

itoggle caption Steve Helber/AP