What's particularly sad about this: it shows that the right candidate could take him out. Rocky Adkins would get at least 45% vs. Mitch, & I'd even go so far as to say that he'd actually have a shot at winning this too, especially given the GOP's recent slew of failures & Mitch's notorious unpopularity (particularly among ancestral Democrats in eastern KY).
But even if/when Biden wins, I doubt he's gonna be able to push McGrath over the finish line, & once the Democrats are back in power, there won't be another chance as good as this one to kick Mitch out (at least, since I doubt that there'll be another virus under a Republican president that'll particularly expose his abject incompetence). This is the perfect time to have fielded a genuinely strong candidate against him, & the party failed.
While I agree that McGrath lost a winnable race in 2018 and has been gaffe-prone in this one, it's easy to forget that KY-06 was one of the toughest districts that Democrats actually made competitive in 2018 (Trump did better here than in OK-05, SC-01, ME-02, and UT-04 in the two party vote, and no district where Trump got >55% went D besides MN-07 for obvious reasons) and McGrath did it as a novice candidate with no political resume or vote-getting experience, beating a popular local mayor in a primary to do it and without running any negative ads. Agreed she's not the best possible recruit, but hard to say she's not formidable.