There are two assumptions to this. First that Democrats will obey the laws as they have demonstrated repeatedly time after time, they feel they are above all laws that apply to others.
Second, the courts, especially some Democrat appointed lower court officials and many State Court officials are not political hacks. Again, this has been repeated shown that they are political hacks.
Democrats will cheat in elections, no matter what. It is their nature.
We have to try to stop that. This 2020 election is going to see a huge Democratic Party absentee ballot harvesting operation that if not illegal is going to be on the edge of illegal. They already have their plans in place for cheating on election day. The move toward mail in ballots is just playing to their plan of cheating.