In a recent debate, Mitt Romney pointed out that the US has generally chosen as its Presidents people with experience as state governors (executives who run things) rather than Senators (legislators). Of course, he failed to acknowledge that John McCain has been other things besides a Senator, and in particular a high officer in the Navy. And the US has often chosen high military officers for President. (In fact, from the very beginning, namely George Washington. But of course, one can add Andrew Jackson and Dwight Eisenhower, as well as a lot of others less highly regarded. True, they were all Army, not Navy, but it takes the same kind of leadership skills to be a high Naval officer as an equally-high Army officer.)
Isn't it obvious that such people as Governor Arnold Schwarzenegger and Mayor Rudy Giuliani, who have served as chief executives of populous political subdivisions (after all, regarding Giuliani, New York City has more people than many states!) would not support someone they felt could not handle the job?