“The petition seeks all appropriate remedies, including vacating the appointment of electors committed to Joseph Biden and allowing the Pennsylvania General Assembly to select their replacements,” Trump attorney Rudy Giuliani said in a statement.

He is asking the court to move swiftly so it can rule before Congress meets on Jan. 6 to tally the vote of the Electoral College, which decisively confirmed Biden’s win with 306 electoral votes to Trump’s 232. But the justices are not scheduled to meet again, even privately, until Jan 8, two days after Congress counts votes.

Pennsylvania last month certified Biden as the winner of the state’s 20 Electoral College votes after three weeks of vote counting and a string of failed legal challenges.

Trump’s campaign and his allies have now filed roughly 50 lawsuits alleging widespread voting fraud. Almost all have been dismissed or dropped because there is no evidence to support their allegations.

Trump has lost before judges of both political parties, including some he appointed. And some of his strongest rebukes have come from conservative Republicans. The Supreme Court has also refused to take up two cases — decisions that Trump has scorned.

The new case is at least the fourth involving Pennsylvania that Trump’s campaign or Republican allies have taken to the Supreme Court in a bid to overturn Biden’s victory in the state or at least reverse court decisions involving mail-in balloting. Many more cases were filed in state and federal courts. Roughly 10,000 mail-in ballots that arrived after polls closed but before a state court-ordered deadline remain in limbo, awaiting the highest court’s decision on whether they should be counted.

The Trump campaign’s filing Sunday appears to target three decisions of Pennsylvania’s Democratic-majority state Supreme Court.