Yes, there really is no downside here.
Either they vote yea and Judge K gets seated, or they vote nay, get destroyed at the ballot box, and he gets seated afterwards.
That magnificent bastard Trump has steered this into a win-win-win scenario.
Neither Murkowski and Collins are up for reelection this year. So they won’t get “destroyed at the ballot box,” not this year anyway. And next year, it may not matter (depending on how the GOP does in November)