Mitt Romney rolled to a double-digit victory in Washington state's Republican presidential caucuses tonight, his fourth triumph in a row and a fresh show of strength in the run-up to 10 campaign contests being held all across America on Tuesday. The 10 primaries and caucuses coming up on so-called Super Tuesday should shape the Republican race to find a challenger to President Barack Obama.
Former Pennsylvania Sen. Rick Santorum and Texas Rep. Ron Paul battled for second place in Washington state, while Newt Gingrich ran a distant fourth. Returns from caucuses in 60% of Washington state's precincts showed Romney with 37% of the vote, while Paul and Santorum each had 24%. Gingrich was drawing 11%. Romney's win was worth at least 12 of the 40 delegates at stake. Paul and Santorum each won at least three. The rest remained unallocated, pending final returns. (Read more Washington state stories.)