Before March 15, all primaries are proportional. March 15 begins winner take all primaries, notably Florida and also Ohio. The winner take all primaries have been Jeb’s gamble all along. That’s the reason for favorite sons Rubio in FL and Kasich in OH; should they win their delegates can most easily be ceded to Bush when they drop out.
Thanks and I see that strategy now. It’s changing my mind about having Trump in the race, but I still don’t trust Trump. What’s to stop him from cutting a deal?