President Trump’s reelection campaign will ask the Supreme Court to overturn the results of the presidential election in Pennsylvania after a string of legal losses, the campaign announced Sunday.

In the Sunday filing, Trump’s personal attorney Rudy Giuliani said the campaign is seeking an order authorizing the state’s GOP-controlled legislature to give Trump the state’s electoral votes. The Electoral College formally certified President-elect Joe Biden as the winner of the election last week.

The court specifically seeks to overturn three Pennsylvania court losses by the campaign. 

“The Campaign’s petition seeks to reverse three decisions which eviscerated the Pennsylvania Legislature’s protections against mail ballot fraud,” Giuliani said in the filing, according to Reuters.

Joshua Douglas, an election law professor at the University of Kentucky, told Reuters the campaign’s filing was “frivolous,” adding “the Court will shut it down quickly.”

The filing comes after the high court previously declined to hear two cases seeking to overturn the results of the election, one from Pennsylvania Republicans and the other from Texas Attorney General Ken Paxton (R).

Since the Electoral College vote, numerous senior Republicans, including Senate Majority Leader Mitch McConnell (R-Ky.), have acknowledged Biden as president-elect. Congress is set to formally tally the votes on Jan. 6.