The 2010 midterms are just around the corner (sort of). Here's what's happening:

The Service Employees International Union has launched a $214,000 radio ad buy supporting Martha Coakley (D) in the race for Sen. Ted Kennedy's old Massachusetts Senate seat; Alexi Giannoulias (D) is up with his first TV ad in the Illinois Senate race; Public Policy Polling gives Rep. Mike Castle (R-DE) a six-point edge over Beau Biden in the Delaware Senate race; and Sen. Blanche Lincoln (D-AR) trails four potential opponents, according to Rasmussen.