If Republicans fall short of expectations this fall, Senate Minority Leader Mitch McConnell (Ky.) could face a leadership challenge. Republican senators say there is much riding on the Nov. 4 elections for McConnell, who is gunning to become majority leader while also attempting to defeat a well-funded Democratic opponent. “If we don’t win the majority then all bets are off,” one GOP senator told The Hill when asked whether McConnell could face a leadership race if Republicans remained in the minority in 2015. The senator, who requested anonymity, said some members of the Senate Republican Conference would call for a...