I was concerned this would happen, that there will be rulings well after the states certify and the electors cast their votes. So what happens if we find out in a few weeks that Trump actually won? I don't know that answer.
thegreggjarrett.com

WI Supreme Court Rules State Did Not Have Authority to Abandon Voter ID Rules Due to COVID
Local Wisconsin election officials made a terrible judgment call, and the Wisconsin Supreme Court has confirmed it. On Monday the Court ruled “that state and local election officials erred when they gave blanket permission allowing voters to declare themselves homebound and skip voter ID...
