Mitt Romney has won the Idaho caucuses, his fourth victory of the night, AP reports.
Romney was considered the clear favorite, thanks to the state's heavy Mormon population as well as to the goodwill he earned across the Rocky Mountain region from his work running the 2002 Olympic Winter Games in Salt Lake City.
The 32 delegates in the state are likely to be awarded winner-takes-all.
As of 11:45, the only two states that hadn't picked a winner were Alaska, which didn't expect results until early morning, and Ohio, which remained locked in a fierce battle between Romney and Rick Santorum.