They aren’t happy that it was called at 87% with a 200 point lead for McCain:

Fox News has learned that the Huckabee campaign has called for a “full investigation” into the Washington State Caucus results, and are sending campaign lawyers to the state to help in that pursuit. Ed Rollins, Huckabee campaign chairman, directly challenged Washington State GOP Chairman Luke Essers move in anounncing that John McCain had won the tight race with only 87.2 percent of the votes counted.
“The chairman showed very bad judgment in stopping the voting last night when announcing John McCain had won, when there was less that a 200 vote margin between the two candidates,” Rollins told Fox in an exclusive interview.” You never announce a vote, in my 40 years of politics I have never know anybody to announce a vote count before the vote is counted.”

But they made a point of saying that they are not accusing the McCain campaign of foul play.
(via)