I’ve been critical of the idea, but it’s worth noting that this was the only region where Ron Paul fairly consistently registered non-embarrassing to decent showings. His best finish was second place in the Montana caucuses with 25 percent of the vote. He ended up running third, behind Mike Huckabee but ahead of John McCain, in Alaska, the only state where Paul ever led in a statewide poll.
UPATE: John Thacker’s comment below is worth a read. Both Romney and Paul have increasingly turned to caucuses to win the delegates that often elude them in wider primaries.