Sabato's Crystal BallMaintained by the University of Virginia Center for Politics. "A comprehensive website run by the University of Virginia’s Center for Politics, Larry J. Sabato‘s Crystal Ball features detailed and frequently updated analysis for elections across the country. The Crystal Ball keeps tabs on presidential elections, along with every Senate and gubernatorial race, as well as the tightest campaigns for the House.
The Crystal Ball has been a leader in accurately predicting elections since its inception. In 2004, the Crystal Ball notched a 99 percent accuracy rate in predicting all races for House, Senate, Governor and each state’s Electoral College outcome." - from website