Republicans with ties to Senate Majority Leader Mitch McConnell (R-Ky.) have formed a new super-PAC to “protect and expand” on the new GOP majority in the Senate.

The New York Times reported on Tuesday that the new PAC, called the Senate Leadership Fund, will work in tandem with other Republican super-PACs, most notably American Crossroads, on messaging, advertising purchases and fundraising efforts to support the new Republican majority in the upper chamber.

{mosads}“The U.S. Senate is under new management — and is taking on President Obama’s freedom-constricting, big-government agenda,” the group’s website says. “As a new, independent super PAC, the Senate Leadership Fund has one goal: to protect and expand the Republican Senate majority when Harry Reid, Elizabeth Warren and their army of left-wing activists try to take it back in 2016.”

In 2014, Republicans seized a 54-46 majority in the Senate, but they’ll face a stiff challenge defending that majority in 2016. Republicans will be defending 24 seats in the Senate, compared to 10 for the Democrats. President Obama twice won seven states where GOP senators are up for reelection.

The New York Times reports that the new PAC won’t shy away from getting involved in primary battles. Its creators say it will help steer big donors, who are inundated with requests for support from all manner of PACs, to a central spot.