After J.D. Vance won the Republican primary for Senate in Ohio, Minority Leader Mitch McConnell (R-Ky.) called Peter Thiel, the billionaire investor who had pumped $15 million into a super PAC backing Vance, to congratulate him but also to make a request: Since McConnell’s resources were limited, the senator said, would Thiel continue to finance Vance through the general election?