Mitch McConnell is the most powerful person in the US Senate. In fact, he may be the most powerful person in US politics because Trump would be toast if the Senate turned against him. But Mitch McConnell has never been particularly popular in his home state of Kentucky, even at the height of his power. In most of his elections, he has relied on the fact that the state is strongly Republican and that he can raise boatloads of money to scare off any serious challenge from a Democrat. Nor has he really received a real primary challenge from the right, crushing now Governor Matt Bevin by over 20% in 2014.