You mean they would’ve been behind her after a primary (presuming she wouldn’t have been destroyed in an ugly primary - then the machine would’ve been more interested in scrambling to preserve their house of cards Dem house majority in Frankfort). Given that Alison Grimes was the more serious and credible candidate, there was already a split.
They were counting on tacky celeb power to win with a divided GOP.
Now neither is happening and McConnell will win.