That math has Democrats seeing a viable path back to control of the Senate, six years after Sen. Mitch McConnell and Republicans took the majority.

“Our record-breaking fundraising haul is another sign that the American people are fed up with Senate Republicans toeing the McConnell line,” Senate Majority PAC President J.B. Poersch said in a statement. “We start 2020 with the momentum and resources necessary to compete deep into the Senate map, while Senate Republicans are forced to defend vulnerable incumbents who become more unpopular by the day.”

The vast majority of the super PAC's fundraising haul — about $47 million — came in the second half of the year, after it raised $13.6 million in the first six months of 2019. Full details of Senate Majority PAC's fundraising will be available in its filing with the Federal Election Commission on Jan. 31.

Senate Majority PAC outraised its Republican counterpart, Senate Leadership Fund, which is affiliated with McConnell, and entered the year with more cash in the bank than the GOP super PAC.

The Republican PAC raised $27.3 million in the off year and had $30.8 million in the bank, The Washington Post reported. Combined with an affiliated nonprofit, One Nation, and two other connected organizations, the GOP outside groups raised $68.3 million and had $68.1 million in the bank at the end of the year.

Senate Majority PAC also has an affiliated nonprofit organization, Majority Forward. A spokesperson declined to share Majority Forward‘s fundraising totals for 2019 but said the total, combined with the super PAC, topped the GOP groups’ total fundraising for the year.