One of the most widespread and annoying mispceptions on this site is that the Pacific Northwest has moderate New England-style Republicans. It doesn't, at least not outside the suburbs of Portland and Seattle. The Republicans in Eastern WA and OR are hard-core SoCons. Huckabee very nearly won last time.
This. Pat Robertson won there in 1988 I think. I wouldn't be surprised at all if Santorum wins Washington, matter of fact I'd say the odds are on his side. Keep in mind that in 2008 the SoCon vote was divided between Romney and Huckabee, this time they will be less so.