Former Democratic National Committee chairman David Wilhelm will endorse Barack Obama in an hour or so, the Associated Press reports. Wilhelm, who chaired the DNC during Bill Clinton's first term, ran day-to-day operations for Clinton's first presidential campaign in 1992.

This isn't the first time Wilhelm has chosen a candidate in 2008 not named Clinton. Wilhelm served as a top adviser to Joe Biden during his ill-fated presidential bid. In the past, Wilhelm has managed races for Senator Paul Simon, Biden, Illinois Governor Rod Blagojevich and Chicago Mayor Richard Daley, the current head of the city.

As a former chair of the DNC, Wilhelm is a super-delegate from Illinois.