Frank weighs in on race

Massachusetts congressman Barney Frank is the latest superdelegate to weigh in on the Democratic nomination fight, declaring that whoever is behind after the last primaries on June 3 should drop out and not drag out the race to the convention.

Frank told the Associated Press today that that should be the case, even if the trailing contender is the one he supports, Hillary Clinton.

He suggested that the candidate who is behind should drop out once it became clear that he or she has no practical chance of winning. Barack Obama currently leads Clinton in both pledged delegates -- those decided by primaries and caucuses -- and in the popular vote.

Neither is likely to win enough delegates through June 3, so the decision will be up to superdelegates, elected officials and party leaders like Frank. About 300 of the 800 or so are still undeclared.