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A superdelegate flood coming?

From NBC's Chuck Todd
Buzz on the Capitol Hill suggests that has many as 34 of the undeclared superdelegates residing in the House will endorse Obama by Wednesday. As many as 18 of these 34 -- many of them elected to Congress in the last four years -- will come out for Obama tomorrow so he can edge closer to his magic number before the vote counting ends in South Dakota and Montana. The biggest Obama get in the House to date will come tomorrow when House Dem Caucus Chairman Jim Clyburn officially declares.

No other member of the Dem leadership is expected to endorse Obama while Clinton is still running.