Supporters of President Donald Trump continue to try to overturn the results of the presidential election, even as the Electoral College voted Monday to formally name Joe Biden the next president.

Atlanta attorney L. Lin Wood Jr. has appealed his lawsuit to the U.S. Supreme Court after other federal courts rejected his claims. Meanwhile, the Georgia Supreme Court Monday denied an extraordinary request by a Monroe County man who sought to challenge the results of the presidential election.

In his lawsuit, Wood says, among other things, that Secretary of State Brad Raffensperger and the State Election Board implemented improper procedures for checking signatures on absentee ballots. His case has already been rejected by a U.S. District Court judge in Atlanta and by the 11th Circuit Court of Appeals.

On Friday the Supreme Court rejected a Texas challenge to election results in Georgia and three other states.

Meanwhile, Paul Boland, the Monroe County resident, appealed his case from Fulton County Superior Court, which dismissed his lawsuit last week. Citing various unsubstantiated allegations of voting fraud, Boland sought audits of the state’s voter registration rolls and absentee ballot envelopes. Barring that, he asked the court to order a new election.

The Fulton County judge dismissed the case on numerous grounds. On Monday, Boland took his case to the Georgia Supreme Court, asking for a ruling in his favor. But the court rejected the request.

On Saturday the Georgia Supreme Court rejected an appeal of a similar lawsuit by Trump.