LIKELY RAlaska (only because of a potential primary challenger to Murkwoski. Safe R if Murkwoski is the GOP candidate)
Arizona (the same as Alaska)
Georgia
Indiana (it's an open seat and might be competitive)
LEAN RMissouri (it might be competitive, but the Blunt + 5 poll showed a lot of republican undecideds and Blunt can work with them, it remember the Kansas 2014 race)
New Hampshire (if Hassan jumps in it's a pure toss-up)
North Carolina (Burr is not the best, but the DEM field is not better)
Ohio (Portman is not unpopular, he is doing better than Strickland in fundraising)
TOSS-UPFlorida (uncertainity in both parties. If Grayson wins and GOP nominates Jolly, it would be Lean R. As of now, it's a pure toss-up)
Nevada (pure toss-up. Both CCM and Heck are good candidates)
Pennsylvania (Toomey is popular and Sestak is already trailing in the polls, but Toomey won "only" 51-49 in a wave year. I think it might be competitive)
LEAN DColorado (the GOP field is not the best)
Illinois (it's a presidential year and Kirk, despite being a moderate republican, will have an hard time)
Wisconsin (Feingold is popular, presidential year... Johnson will have an hard time)