It would put RAT senators on record as defending a demented criminal, when many of them are up for re-election in 2024.
The House hearings and vote will be spun to the public as a waste of time. It will receive very little coverage. The public, thanks to Rat (and to some extent GOP) abuse of the impeachment process will just view it as more partisan wrangling.
Not everyone is as into politics as those here on FR. The denizens of FR are at the rightward end of the conservative demographic and therefore small in number. Because of the echo chamber effect here on FR it’s easy to fall into the trap that our views are conservative mainstream let alone voter demographic mainstream. They certainly are not!