I think that many of the people get it already. Proof is that President Trump’s numbers are staying mostly positive despite the 24/7 onslaught. I found that satisfyingly reassuring.
MCCain has almost 6 more years to serve against the GOP unless there is a public outrage against him forcing him to resign.
If you can’t believe you made such a mistake, you can do something to right that error.
Petitions and Protests and make him go away.