Saying time is running out, former White House Chief of Staff Rahm Emanuel is asking his supporters to give to House Democrats. 

Emanuel took a break from his upstart bid for mayor of Chicago to reprise an old role he held as a member of Congress, when he served for two cycles as chairman of the Democratic Congressional Campaign Committee (DCCC).

"I've been looking at the polls and I don't see a single reason why Democrats can't retain our strong House Majority with enough support. But time is running out," Emanuel wrote in a fundraising e-mail for the DCCC. "Right now, dozens of Democratic House candidates are in the promising — but precarious — situation of trying to maintain a narrow lead in the final 14 days."

Emanuel resigned Oct. 1 as President Obama's chief of staff to return to Chicago and pursue a bid for mayor. In that time, the former congressman has focused largely on campaigning for Chicagoland voters, and not on behalf of Democrats nationally.

Democrats won a majority in the House during Emanuel's stewardship of the DCCC in the election cycles of 2006 and 2008, when the party picked up 52 seats. 

Emanuel referenced his tenure as DCCC chairman to raise money for Democrats' efforts now.

"As a former DCCC Chairman, I know what kind of tough decisions they are being faced with and with just 14 days until Election Day, decisions are being made almost hourly about where to invest our resources," he said. "Every single dollar makes a difference."