We are so close to the breaking point!
That is when more and more GOP senators will be increasingly very vulnerable to losing re-election.
Arizona
Colorado
Iowa
Maine
North Carolina
Furthermore, if 55% feel Trump does not deserve re-election in polls then Mitch Mcconnell knows he can’t block holding a trial.
There are basically two critical point polls.
National polls: 55% firm anti-Trump support for conviction/removal from office.
State polls for vulnerable incumbent republican senators in swing states/blue states
The timing has to be exactly right so the senate trial happens in a way that does not exonerate him.