(CNN) - Barack Obama has picked up six additional superdelegate endorsements so far Tuesday: four from Michigan (each with a half-vote), one from Massachusetts, and one from Missouri.
CNN has also confirmed that six of the 13 Florida delegates pledged to John Edwards are now backing Obama, giving him three additional pledged delegate votes.
Obama now leads Clinton by 166 delegates in overall delegates, 120 in pledged delegates, and 46 in superdelegates.
The Illinois senator is now 35 delegates short of clinching the Democratic nomination while Clinton is 201 delegates short of clinching the nomination.
There are 31 pledged delegates up for grabs in the remaining two contests (Montana and South Dakota on Tuesday night).
There are 193 superdelegates who remain uncommitted.