Romney carried Montana with 55.35% of the vote to Obama's 41.70%, with a 14.64% margin of victory. Montana was the second-best state performance for Libertarian candidate Gary Johnson, carrying about 3% of the vote.
Romney performed much better than John McCain had in 2008, when he narrowly won over Obama.
(Note: Italicization indicates a withdrawn candidacy)
The Republican caucuses took place on June 14 to 16, 2012 as the Montana state convention. Ten days before, the state delegates were selected by the central committee in each county 23 delegates were to have been chosen, for a total of 26 delegates to go to the national convention. Prior to selecting delegates, a non-binding primary election was held June 5, 2012. Results were announced before the national convention in August.