It will certainly be an interesting midterm, but I would not count on either a red wave or a blue wave. It will be close in most of the elections.
As far as Kavanaugh goes, it is rather small potatoes. The left is spending far more political capital and risking far more going against Kavanaugh, while the Repubs are letting Ford testify and thus not spending much political capital at all.
Honestly, this could EASILY backfire on the Democrats. If Ford is not believable, the Democrats will lose vote from this. You think you are inspiring women to vote Democrat, but you really are only inspiring the feminists who already vote Democrat.
Take the second accusation. That is a nothingburger. One of my old girlfriends used to take part in a "naked mile" when she went to Michigan. Exposure at a drunken party?
Avanati's claim would be far more damaging, but he is known to over-promise and under-deliver.