Maher promoted the "surprise" revelation on his Twitter account prior to his appearance onstage for the performance of "StupidCrazyPolitics" for Yahoo's Live Standup Series.

The Obama campaign earlier this month announced its support of Priorities USA as a source of funding for the president's reelection campaign. As a Democratic super-PAC, Priorities USA is allowed to raise unlimited funds so long as it is officially unaffiliated with a candidate. The Obama campaign plans to skirt the rules by sending campaign officials — not including Obama, Vice President Biden or their spouses —  to Priorities USA fundraising events. 

The super-PAC raised only $59,000 in January, before the announcement, putting the group well behind the super-PACs supporting Republican presidential candidates such as Mitt Romney.