Whatever his failings as a Senator are, and they are many, Mitch McConnell is not a stupid man. He knows better than most what a mess the Republican Clown Car is, and that no member of it is qualified to be President, nor will have much of a chance against the Democratic nominee.
President Obama should have lunch with Mitch soon and give him a choice.
"Look, Mitch, we can both read polls, and we both know that if Hillary Clinton is the Democratic nominee, she's going to win in November, especially if there's an issue out there such as a pending Supreme Court nomination that will drive up voter turn-out. So, you can either have Hillary Clinton as the next President of the United States, or you can have her on the Supreme Court. You decide."