I’m a Cruz supporter and I don’t think he won. Neither did Trump or Rubio. IMO Christie came out the bigger winner. It won’t matter because no one supports him, but he did the best.
Cruz survived the first two questions, which was all he needed I guess, but his performance wasn’t that strong.
Trump did surpisingly poorly despite doing well in most other debates.
Rubio lost as a direct result of Christie being the winner.
I guess you could call Bush a winner too for not coming out of it bleeding from Trump inflicted wounds and actually landing a shot on the guy. It is a pretty low bar for him to get over, but expectations are pretty low. For Bush, like Christie it doesn’t matter. He’s done.
Trump has lost every debate mostly because they are not debates at all, but it doesn't seem to matter because the professional politicians are being rejected and Trump is the benefactor.
Trump is right on every conservative issue the others are not, although most have had a delayed come to Jesus moment on immigration.