U.S. Democratic presidential hopefuls Barack Obama and Hillary Clinton are competing Sunday in party caucuses in Maine.
Caucuses were held since Sunday afternoon in 420 towns and cities across the northeastern state.
The Maine contest was attracting more interest because of the tight race between the party's two remaining candidates. Obama, a senator from Illinois, swept races in Nebraska, Louisiana, Washington state and Virgin Islands Saturday.
So far he has 1,106 of the 4045 delegates who will cast their votes to decide the Democratic presidential nominee in August's party convention in Denver, Colorado, comparing to Clinton's 1,139,according to CNN's count.
Either of them needs at least 2,025 delegates to win the nomination, a number which most analysts said that none of them is unlikely to get before the convention.
There are 24 delegates at stake in the Maine caucuses.