The court was unanimous in deciding against Kelly and others, and refusing to block vote certification on Saturday. Five of the seven judges wrote that they believed the lawsuit had been filed far too late, a year after absentee voting procedures had been established in the state and weeks after millions of Pennsylvanians voted in good faith.
“It is beyond cavil that Petitioners failed to act with due diligence in presenting the instant claim,” the court wrote in its majority opinion.
The high court said the Republicans couldn’t reconfigure their complaints and try again.
Lower courts in the state had said the lawsuit, which was filed weeks after Election Day, could stop counties from certifying votes, but that move had essentially become irrelevant.
Judge Matthew Brann of the US District Court in the Middle District of Pennsylvania called the Trump campaign’s case “Frankenstein’s monster” for its poorly stitched together legal theories.
The court opinion also rejected Trump’s motion to undo Pennsylvania’s certification of votes, calling it “unprecedented” and “breathtaking” relief where no fraud had been alleged.
This story has been updated with additional information.
CNN’s Kate Sullivan contributed to this report.