“Trump is in it to dilute the anti-Bush vote. Trump wants Hillary or Jeb to be president.”
He has SEVERELY WEAKENED both of them, so I have some trouble with that theory. He weakened Hillary by forcing her to say that Illegal felons should not be released into American society - makes a lot of sense for us, but ABSOLUTELY KILLS HER with her base. And he has weakened Jeb in a number of ways.
If Trump intended to proper either of them up, he would be attacking conservative and/or lining up a 3rd Party run - he is not doing either - but if does get driven out of the Republican Party, he may just do that.
Trump has cut into the poll numbers for Cruz and others. He is wooing the angry, anti-Bush, anti-establishment voters. We’ll see.