The majority of candidates in this presidential election have graduated from Yale. Also, it looks like we'll have the first election fight between two Skull and Bones members, the exclusive secret society that also included members like Howard Taft, Henry Luce, William F. Buckley and the elder Bush. You can find more on Skull and Bones here, here, here and here.
Here's the classic Ron Rosenbaum Esquire article on the group.