Senate Majority Leader John Thune (R-S.D.) and Minority Leader Chuck Schumer (D-N.Y.) are living out their midterm nightmares — with nominees they didn't want and former colleagues they no longer control.Why it matters: Together, Schumer and Thune are stuck with five Senate races in which their party establishments thought they had a better chance of winning with someone else.🤠 Texas: Thune's efforts to stop Texas Attorney General Ken Paxton from winning the party's Senate nomination failed.