Biden beat President Donald Trump by more than 80,000 votes in Pennsylvania, a state Trump had won in 2016. Most mail-in ballots were submitted by Democrats.
The state’s high court said the plaintiffs waited too long to file the challenge and noted the Republicans’ staggering demand that an entire election be overturned retroactively.
In the underlying lawsuit, Kelly and the other Republican plaintiffs had sought to either throw out the 2.5 million mail-in ballots submitted under the law or to wipe out the election results and direct the state’s Republican-controlled Legislature to pick Pennsylvania’s presidential electors.