For there to be a Democratic Majority in the Senate and House it will take:
They will have to come from-
Pennsylvania- Rick Santorum v. Bob Casey
Rhode Island - Lincoln Chafee v Sheldon Whitehouse
Montana- Conrad Burns v John Tester
Ohio- Mike DeWine v Sherodd Brown
Missouri- Jim Talent v Claire McCaskill
Tennessee(Open)-Bob Corker v Harold Ford
These six are very winnable (the tennessee one may just be "winnable"). The Nevada and Arizona seats are in play, but unlikely.
IA-01(open)
CO-07(open)
OH-18(Ney)
PN-06(Gerlach)
IN-09(Sodrel)
AZ-08(open)
CT-04(Shays)
FL-22(Shaw)
NM-01(Wilson)
CT-02(Simmons)
IN-08(Hostettler)
KY-04(Davis)
TX-22(open)
OH-15(Pryce)
NY-24(open)
There are a ton of other seats in play here. Especially KY-03(Northup). Yeah.