Mitch McConnell is shrewd. He'll just tell Flake, Murkowski, and Collins that they'll have to publicly state why they oppose Kavanaugh. And it won't go over with the voting public.
Your words: "...quite a few inconsistencies and very little if any corroborating evidence to support her case..." You are 100% correct.
No way any Republican can vote against Kavanaugh. Not after today. The upcoming testimony of Kavanaugh is irrelevant.