I remember around 2005 or 2006 predicting that Russ Feingold would be the Democratic nominee in 2008 and that he would run against George Allen, that Obama would wait until 2016 and serve one term after Feingold's two terms after having possibly been Attorney General in the Feingold administration.
Obviously it didn't pan out that way, but what if it did? If Allen avoided the "macaca" incident and held onto his senate seat in 06 before jumping in the ring. What would that election have been like and who would there running mates have been?