To win, Mr. Trump must prove systemic fraud, with illegal votes in the tens of thousands. There is no evidence of that so far. Unless some emerges quickly, the president’s chances in court will decline precipitously when states start certifying results, as Georgia will on Nov. 20, followed by Pennsylvania and Michigan on Nov. 23, Arizona on Nov. 30, and Wisconsin and Nevada on Dec. 1. By seating one candidate’s electors, these certifications will raise the legal bar to overturn state results and make it even more difficult for Mr. Trump to prevail before the Electoral College meets Dec. 14.
TV networks showed jubilant crowds in major cities celebrating Mr. Biden’s victory; they didn’t show the nearly equal number of people who mourned Mr. Trump’s defeat. U.S. politics remains polarized and venomous. Closing out this election will be a hard but necessary step toward restoring some unity and political equilibrium. Once his days in court are over, the president should do his part to unite the country by leading a peaceful transition and letting grievances go.