1) Dems were, for his campaign....he was also party to GORE v Bush1) Gore wasn’t party to the lawsuit in your link. You should read your own stories. Also, a lawsuit is actually due process. Trump just asked Raffebsperger to toss tens of thousands of votes for him. Just do it. That’s not due process.
2) If the objections were upheld (which there never was any chance they would be) then the electoral votes from the states are disregarded. The state does not appoint new electors. Trump was requesting the legislatures to certify different electors because he asked them to. It was indeed outside the law.
2) Trump followed the legal process.