You are exaggerating his negative down ballot effect. As I said earlier on another thread, I think he will actually be helpful for Pub senate candidates in AR, MO, IN, LA and possibly PA because of his likely popularity outside of Philly and Pittsburgh. He'll hurt Johnson in WI and Kirk in IL, but they're probably deadmen walking already. He definitely hurts Heck in NV and probably hurts in NH, FL, OH and maybe AZ. But FWIW, Cruz may be worse down ballot because he hurts worse than Trump in NH, PA, OH & WI. And Trump has a much better chance of getting elected than Cruz does. And neither Trump nor Cruz hurt in the House because 90% of those races are essentially uncontested. They might help lose a few House seats that Jeb or Kasich wouldn't lose, but the Pub lead there is so large that it doesn't matter.