4:55 PM PT: Donnelly's now up 4% with 20% reporting in IN-Sen.
5:00 PM PT (James L): Take a look at IN-02 -- with 42% reporting, Democrat Brendan Mullen is leading the race for Joe Donnelly's open seat by 55-42.
5:00 PM PT: 8pm poll closings: Alabama, Connecticut, Delaware, Illinois, Kansas, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Jersey, North Dakota, Oklahoma, Pennsylvania, South Dakota, Tennessee, and Texas.
5:02 PM PT: PA-Sen first wave of exits back out to 53 for Dem Sen. Bob Casey and 46 for Tom Smith (R).
5:03 PM PT: MO-Sen first wave of exit polls back out to 51-44 for Dem Sen. Claire McCaskill over Todd Akin.
5:04 PM PT: MA-Sen first wave of exits back out to a 52-47 lead for Elizabeth Warren (D) over GOP Sen. Scott Brown.
5:06 PM PT: CT-Sen first wave of exit polls back out to 52-46 for Chris Murphy (D) over Linda McMahon (R).
5:06 PM PT: ME-Sen is called for independent Angus King. FL-Sen is called for Dem Sen. Bill Nelson.
5:08 PM PT: First county flipped Red->Blue! Franklin CO, KY. McCain +0.6 in 2008, Obama +0.8 in 2012. Turnout down 5%.
5:10 PM PT: Joe Donnelly is now up 6, but check out IN-Gov. Tied at 48.1% with a quarter reporting.
5:16 PM PT: KY-06 is not looking great for Dem Rep. Ben Chandler. With 63% reporting, he's losing to Andy Barr 53-45.
5:19 PM PT: In FL-26, Dem Joe Garcia is up 54-43 over GOP Rep. David Rivera in the early vote, which is pretty considerable.
5:21 PM PT: In FL-02, Dem Al Lawson is up 10 over GOP Rep. Steve Southerland with 10% reporting, though this is a pretty polarized district.
5:23 PM PT: GOP-held FL-10 is quite close with 72% reporting. Webster (R) is up 52-48.
5:27 PM PT: Dem Keith Fitzgerald not too far behind in FL-16... 52-48 for GOP Rep. Vern Buchanan with 35% in.
5:29 PM PT: The AP has called CT-Sen for Democrat Chris Murphy over Linda McMahon.
5:30 PM PT: 8:30pm poll closings: Just Arkansas.
5:35 PM PT: CNN has called KY-06 for Republican Andy Barr, who defeats Dem Rep. Ben Chandler, the first incumbent to lose tonight.
5:37 PM PT (Kaili Joy Gray): New thread here.