Not worried at all about Trump in the general. He will win blue state working class Democrats and demolish the Hillary/Sanders/Obama machine.
Cruz or Rubio would be Cuban sandwich meat.
Trump is one of the few candidates who loses to Hitlery in a head to head matchup, and that should not come as a surprise since he has the highest negatives in the history of polling for negatives!
Trump easily could have run as a democrat. He has been so generous to them. The fraud will never be president.