Elizabeth WarrenElizabeth Ann WarrenWarren battles Carson: Housing discrimination 'the scandal that should get you fired' Overnight Regulation: Omnibus includes deal on tip-pooling rule | Groups sue over rules for organic livestock | AT&T, DOJ make opening arguments in merger trial Warren presses Mulvaney, Azar on tip pooling MORE is making a final fundraising push in hopes of bringing in $200,000 before the year's end.

Warren's chief of staff, Mindy Meyers, issued a positive email to supporters touting the "incredible" thing the Warren campaign accomplished in winning based on what she calls in the email "true grassroots" support.

Warren will be sworn in as Senator soon, but "in the meantime, we want to help pay off our final, year-end bills and prove again the power of our strong grassroots campaign," Meyers says.

The email adds that the campaign has set a high bar for its final push: $200,000 by Dec. 31. It was sent to supporters on Thursday afternoon, just four days ahead of that deadline — a relatively steep target for post-campaign fundraising.

Warren finished one of the nation's most expensive senate competitions against Sen. Scott Brown (R-Mass.) over $400,000 in debt, even after raising $42 million for her bid.

Her campaign has previously issued a number of similar pleas to supporters, asking for help in retiring her debt.