With one hour to go before the polls close in Indiana and the first returns start trickling in, the  exit polls are already being leaked. Ignore them. Mark Blumenthal notes that there are numerous problems with exit polls, including overstating Democratic support and “refusal bias”. Also, the networks will begin to report “composite” exit polls as soon as the polls close, but these are actually a mix of exit polling and pre-election polling – in other words, probably not reflective of reality until later in the evening. Nate Silver also offers ten more reasons for ignoring exit polls tonight.

The best way to keep tabs on what’s going down tonight is probably Daily Kos’s real-time scoreboard, and Twitter – particularly @nprpolitics. Also, Patrick Ruffini is going to be directly monitoring the county-by-county results and will be able to call states earlier than the media.