05/28/2008 05:12 am ET Updated May 25, 2011

Obama Expected To Declare Delegate Majority Tuesday Night

Besides location, Obama is also expected Tuesday night to declare that he's won a majority of the total number of pledged delegates. There are 3,253 pledged delegates, and Obama, even if he has a poor showing in the Kentucky and Oregon primaries, should easily top the 1,627 delegates needed to make that claim.

Pledged delegates are those won by the candidates in the primary and caucus contests, as opposed to nearly 800 superdelegates, whose votes are not tied to any primary or caucus results. Superdelegates are Democratic governors, members of Congress and party officials.

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