If any doubt remained that Mitt Romney is sweeping the Idaho Republican Party, be it noted that to the previous list including Senator Larry Craig and Representative Mike Simpson add (among others):
Lieutenant Governor Jim Risch, state Controller Donna Jones, Superintendent of Public Instruction Tom Luna, Senate President pro tem Robert Geddes, House Speaker Lawerence Denney, Senate majority leader Bart Davis, House Majority Leader Mike Moyle, and a long string of other state legislators as well. (They're noted on our presidential support page.)
The only major gets remaining are Governor C.L. "Butch" Otter (governors usually stay out until nominations have been decided), Senator Mike Crapo, Representative Bill Sali and three other statewide public officials. Romney's roster of endorsements in Idaho would be dominant even if everyone else went for another candidate.