He also had 67 percent support in Washington state caucuses, compared with 32 percent for Clinton with returns tallied from about one-half of the state's precincts. There were 78 delegates at stake, the largest single prize of the night.
The Democratic race moved into a new, post-Super Tuesday phase as Sen. John McCain flunked his first ballot test since becoming the Republican nominee-in-waiting. He lost Kansas caucuses to Mike Huckabee, gaining less than 24 percent of the vote.
Huckabee, the former Arkansas governor, got nearly 60 percent of the vote a few hours after telling conservatives in Washington, "I majored in miracles, and I still believe in them." He won all 36 delegates at stake.