Vice President: Paul Ryan (R-WI)
Secretary of State: Jon Huntsman (R-UT)
Secretary of Defense: David Petraeus (R-NY)
Secretary of the Treasury: Jim Demint (R-SC)
Attorney General: Chris Christie (R-NJ)
Secretary of the Interior: Brian Schweitzer (D-MT)
Secretary of Agriculture: Terry Branstad (D-IA)
Secretary of Commerce: Tom Coburn (R-OK)
Secretary of Labor: Richard Burr (R-NC)
Secretary of Health and Human Services: Bobby Jindal (R-LA)
Secretary of Transportation: Tim Pawlenty (R-MN)
Secretary of Energy: Sarah Palin (R-AK)
Secretary of Veterans Affairs: Chuck Hagel (R-NE)
Secretary of Homeland Security - Jan Brewer (R-AZ)
I highly doubt Governor Schweitzer would accept a cabinet post. He's likely to challenge Romney in 2016, and serving in his cabinet would do nothing but hurt him with Democrats.