Should impeachment be initiated, it would go to the Senate for trial. The rabid GOP Senators have already stated that they will immediately clear Trump of all charges.

This would allow Trump to go into the next election with boasting rights to a clear victory - an invalid victory, but why would he care? This would be extremely bad for a Democrat candidate.

The better strategy is to keep piling on and publicizing clear reasons for impeachment, and non-impeachable crimes and infractions as well. Should Trump win re-election, or look like he's about to win re-election, that's the time to hit him with impeachment.

If he does win re-election, time to cripple his administration with impeachment and umpteen investigations.