About 30 of the 36 incumbent governors are expected to be on the ballot in 2014, the largest number in half a century, predicted Larry J. Sabato, director of the University of Virginia's Center on Politics in Charlottesville, in a June analysis. "The biggest difference between 2010 (when the four governors were elected) and 2014 is incumbency: the lack of it in 2010 and the abundance of it in 2014. Since 1960, four out of five incumbents who have made it into a general election ballot have been reelected," he said.