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Tonight is a primary night with elections in Kentucky, Pennsylvania, Arkansas and Oregon. Polls close at (all eastern times)

Kentucky: 6 pm
Pennsylvania: 8 pm
Arkansas: 8:30 pm
Oregon: 11 pm

Election results for Kentucky can be found at AP or Politico.

The big races are the contested Senate primaries in KY, PA and AR, and the special election in PA-12 Congressional district to replace Democrat John Murtha. David Dayen has a primer on the races to watch this evening and so does Swing State Project. Ben Tribbett examines what you should be watching for in the Arkansas primary.

Results should start coming in from Kentucky very shortly. (Feel free to post your prediction for the results this evening in the comment sections.)

6:03 – Greg Sargent is reporting that turnout has been very light in Pennsylvania, which should favor Joe Sestak over Arlen Specter.

6:24 – The very first results are just starting to come in from the eastern part of Kentucky. With less than 1 percent of precincts reporting in the Senate, it is Democrats Dan Mongiardo 50.5 – Jack Conway 37.7, and Republicans Rand Paul 49.9 – Trey Grayson 43.3.

Jon Walker

Jon Walker

Jonathan Walker grew up in New Jersey. He graduated from Wesleyan University in 2006. He is an expert on politics, health care and drug policy. He is also the author of After Legalization and Cobalt Slave, and a Futurist writer at