3:53 p.m. Hillary Clinton and Barack Obama face off in the Maine caucuses this afternoon, the 32nd state contest (plus 2 U.S. territories) to be held by Democrats so far this election season. Mitt Romney won the Republican caucuses in Maine a week ago.

The Democratic delegate count is basically even between the two Democratic candidates, varying at the margins depending on which estimate one reads.

To date, Obama has won 18 states plus the Virgin Islands while Clinton has won 12 states plus American Samoa (Clinton’s state victory total includes Michigan, where Obama was not on the ballot, and Florida – two states which currently will not seat any delegates at the Democratic National Convention due to violation of Party rules). Final results in the New Mexico caucuses are still pending from Super Tuesday’s election and are not included in either candidate’s state total above; Clinton currently holds a lead of approximately 1,100 votes there.

Maine Democratic Caucus (11% reporting)
Obama = 51%
Clinton = 48%
Uncommitted = 1%

4:22 p.m. Maine Democratic Caucus (44% reporting)
Obama = 57%
Clinton = 42%
Uncommitted = 1%

4:51 p.m. Maine Democratic Caucus (59% reporting)
Obama = 57%
Clinton = 42%
Uncommitted = 1%

Obama appears to be on his way to another caucus victory – it would be his 9th caucus win compared to just one for Clinton (Nevada, with New Mexico caucus results still pending).

5:32 p.m. NBC News projects Obama has won the Maine caucuses – the 19th state in his column during the 2008 campaign.

6:00 p.m. Maine Democratic Caucus (70% reporting)
Obama = 58%
Clinton = 41%
Uncommitted = 1%

9:13 p.m. Maine Democratic Caucus (95% reporting)
Obama = 59%
Clinton = 40%
Uncommitted = 1%