I expect the race,to tighten after the debate. My prediction, baring a major screwup like Rubio experienced is:
Trump 32
Cruz. 26
Rubio 19
KAsich 11
Bush. 10
This would be the kiss of death to Bush. W visiting may help and it is possible he could have a better debate than Kasich. In either case it will determine who is 4th or 5th not 1, 2 or 3.
This would be the kiss of death to Bush.
I think Jeb beats out Kasich and winds up close to Rubio.
Trump 38
Cruz 20
Rubot 14
Bush 13
Kasich 9
Others 6