Mitt Romney has won the GOP caucuses in the state of Idaho. As Aaron Blake explained:

Demographics helped Mitt Romney win Idaho.

A quarter of Idahoans belong to the Church of Jesus Christ of Latter-day Saints, the second-highest Mormon population in the country after Utah.

On top of that base of support, Romney earned goodwill across the Rocky Mountain region when he ran the 2002 Salt Lake City Olympics.

Romney attracted rock-star-level crowds in the state, a surreal contrast for a campaign that has struggled to find enthusiastic crowds in more competitive states.

Ron Paul also performed well in Idaho, as he did in 2008. Low-population caucus states are where he shines, and his libertarian message has long been popular in this independent-minded state.

Idaho was Paul’s strongest state in 2008; he won 24 percent of the vote, finishing a distant second to Sen. John McCain (Ariz).

Super Tuesday is upon us and the battle for the Republican presidential nomination is in high gear as the four leading candidates compete for more than 400 delegates in 10 states: Ohio, Georgia, Tennessee, Oklahoma, Vermont, Massachusetts, Virginia, North Dakota, Idaho and Alaska. Results from the caucuses in Idaho were expected to start coming in about 11 p.m. EST.

Analysis from The Fix: The most competitive of the three caucus states voting Tuesday, Idaho is friendly territory for Mitt Romney — a quarter of the state’s residents are Mormon. He’s been drawing crowds there like he does nowhere else. But Rep. Ron Paul has targeted the state and is popular there too; it’s where he performed best in 2008, taking 24 percent of the vote.

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