In GOP caucuses, that would be all but impossible. This is precinct level where people know each other, and you have stick around for an hour or two and compete to go to the county level to have any impact.
He’d be better off staying true to what people like about him: A guy who won’t pander to anybody.
“I know this will cost me any chance of winning Iowa, but I think it’s a bad idea to use hardworking American’s tax money to pay farmers NOT to grow food.”
And remember, the last two Iowa winners were Santorum and Huckabee.