He can give them money.
He gave $30,000,000 to Strange to defeat Moore.
McConnell has never given money to democrats. Unlike a certain other person, who’s endorsement of Strange was worth more than every penny in his campaign coffer.
As for bogeymen, mine are Chuck and Nancy. Obamacare was passed in the first place cause they had a large majority. McConnell left a Supreme Court seat empty for a year so a Republican President could fill it instead of Osama.