Of the many media organizations that will be covering tonight's races, which includes a brutal run-off between longtime incumbent Thad Cochran against Tea Party upstart Chris McDaniel, the Ace of Spades HQ Decision Desk will be updating the results as they come in live at their website here and on Twitter at @AOSHQDD.
As Neil Stevens posted a week or so back, it is a group of volunteers who work hard to cover county-by-county the returns. Each volunteer gets a handful of counties to cover, and they constantly update the info you'll see on the website linked above. Tonight, it will cover a multitude of races ranging from Mississippi to Florida to Colorado to New York to Oklahoma. It's a fast-growing network of volunteers that notably called Eric Cantor's defeat nearly a half hour before the Associated Press did.
And, they are always accepting volunteers, so if you're interested, e-mail them at AOSHQDD at GMAIL dot COM to take part.