If Trump runs for Governor in NY as a GOP candidate he will win. I don't agree with what much Trump says but I hate Spitzer. And if Trump were the governor you can bet that Ground Zero would be rebuilt.
Trump has already said he isn't interested.
Trump has been critical of the Freedom Tower and the current plan for rebuilding Ground Zero. There is no market. Seven WTC, the first building rebuilt, is having as much or more trouble getting tenants as the original WTC had. Trump, as governor, would likely not support the current plans for Ground Zero. He would likely throw the rebuilding process back to square one.