Nothing to contest if Trump wins by a bigger margin than the degree of cheating and fraud the Democrats are set up to inflict on the nation as a whole, and in those venues where the apparent margins would seem to otherwise tilt to Republicans.
There ain’t no such thing as a “level playing field”.
That is a very big "if".
The Democrats did way better with election fraud than they ever should have been able to do in the most recent Florida and Georgia elections. Yes, they lost. But they will double-down on those efforts. They have telegraphed their intentions to cheat massively in the 2020 elections.
Twenty States are reported considering new "laws" that would, in effect, prevent President Donald Trump from being listed on their ballots for the election.
This is a recipe for Civil War.