As yesterday, I'll recommend Political Wire for their coverage tonight; National Journal's Hotline On Call blog is also doing a fabulous job with reports coming in from around the country all the time.
There will be live-blogging at Donkleplant tonight, and very frequent updates at The Moderate Voice.
Here's the rundown of when polls are set to close (some of these will change, there have been reports all day that polls may be open late in various places due to all kinds of glitches):
[Note: All time EST]
6 p.m. - IN, KY (EST)
7 p.m. - IN (CST), KY (CST), FL (EST), VT, GA, NH (some), SC
7:30 p.m. - NC, OH, WV
8 p.m. - FL (CST), AL, CT, DE, IL, KS, MA, ME, MI, MO, MS, MD, NH (some), NJ, OK, PA, SD, TN, TX
8:30 p.m. - AR
9 p.m. - AZ, CO, LA, MN, NM, NB, NY, RI, SD, TX, WI, WY
10 p.m. - ID, IA, MT, NV, ND, OR (MST), UT
11 p.m. - CA, HA, OR (PST), WA
12 a.m. - AK
[Update: Just found this, which will be very useful. Also, exit poll data seems - stress seems - to favor Democrats given prioritization of national issues over local matters and the emphasis on corruption, Iraq and the economy. Of course, we all know how dangerous exit polls are.]