Oklahoma Republican Rep. Mary Fallin has defeated Democratic Lt. Gov. Jari Askins in the race for governor, CNN projects. Democratic Gov. Brad Henry is term-limited.

Georgia Republican incumbent Sen. Johnny Isakson has won re-election to a second term as senator, CNN projects, beating out Democratic nominee Michael Thurmond. Projections are based on CNN analysis of exit poll data.

Maryland Democratic incumbent Gov. Martin O'Malley has won re-election in the gubernatorial race, CNN projects, beating out Republican former Gov. Bob Ehrlich.

Virginia Republican nominee Scott Rigell has defeated Democratic incumbent Rep. Glenn Nye in the race for the 2nd Congressional District, CNN projects.

South Dakota Republican Lt. Gov. Dennis Daugaard has defeated Democrat Scott Heidepriem in the race for governor, CNN projects. Republican Gov. Mike Rounds is term-limited.

Tennessee Republican Scott DesJarlais has defeated Democratic incumbent Rep. Lincoln Davis in the race for the 4th Congressional District, CNN projects.

Florida Republican nominee Steve Southerland has defeated Democratic incumbent Rep. Allen Boyd in the race for the 2nd Congressional District, CNN projects.