CNN projects Romney wins Washington state caucus
With about 42 percent of the vote counted, the former Massachusetts governor had 37.2 percent support in the non-binding straw poll. He was followed by Texas Congressman Ron Paul with 24.1 percent and former U.S. Senator Rick Santorum with 23.9 percent.
The outcome marks a fourth state win for Romney this week, after he picked up a bitterly fought victory in Michigan, as well as wins in Arizona and Wyoming.