Chad, my feeling is that the answer to your question has to be “yes.” Anecdotally, we’ve seen video of voters describing their choices as driven by the confirmation hearings. Empirically, the evidence seems mixed, something along the lines of “there was an effect, of possibly unclear net direction, and that effect has faded.” But I think at the very least the hearings turned up the burner on our collective political stovetop. And they turned it up a few weeks earlier than they otherwise might have been. I find it hard to believe that the moon-landing-level viewership of Ford’s and Kavanuagh’s testimony had no effect. To the net benefit of whom, however? I’m not sure.
Tl;dr: idk.