Senator Barack Obama appeared to win the Democratic caucuses in Guam on Saturday, defeating Senator Hillary Rodham Clinton by seven votes.

When hand-counting finished shortly before 9 a.m. Sunday, delegates pledged to Mr. Obama, of Illinois, had received 2,264 votes, compared with Mrs. ClintonÕs slate, which had received 2,257, according to The Associated Press.

Turnout at the caucuses was about three times greater than it had been in previous years