The court decided to invalidate more than 2,3 thousand votes in the state of Pennsylvania.
The decree states that 2349 ballots that arrived by mail were rejected because they do not have a note with the departure date. All voided votes were cast in Allegheny County, which has a population of more than 1.2 million and is centered on Pittsburgh.
Earlier, the US court of appeals for the third circuit rejected a lawsuit by the Republican Party seeking to invalidate nearly ten thousand ballots that arrived late in Pennsylvania.
Donald Trump and his lawyer Rudy Giuliani have repeatedly stated that more than 600 thousand votes cast in Philadelphia and Pittsburgh should be invalidated precisely because of this problem.