Democratic Senators are meeting at the Democratic Senatorial Campaign Committee this morning to try to hash out a finale to the dramatic presidential nominating fight and unify the party.

Sen. Tom Harkin (Iowa) is organizing the meeting, said Democratic sources, and other participants include Sen. Ken Salazar (Colo.), Mary Landrieu (La.), Tom Carper (Del.) and Barbara Boxer (Calif.).

Outside the meeting, Salazar told reporters that party leaders were trying to hammer out an announcement or letter that would bring Democrats together now that Sen. Barack Obama (D-Ill.) has claimed enough delegates to clinch the presidential nomination.

Party leaders said this morning that superdelegates — many of them lawmakers — should pick sides in the contest by Friday at the latest.

Though she fell behind in the delegate race after last night’s final primaries in South Dakota and Montana, Sen. Hillary Rodham Clinton (D-N.Y.) did not concede in a speech on Tuesday night.