I'm afraid it's too late for your argument, since Rudy is already the fringe of the GOP with his liberalism. I never said the Liberal Party of New York would run Rudy. I said he could run a third party using that name. As far as the Conservative Party of New York, surely you jest. A New York Conservative is still to the left of most Americans.
Suffice it to say, that Rudy doesn't "need" to be president". It is also something that he hasn't yearned to attain all of his life; not even all of his adult life. He won't run fringe and there is no such thing as a national LIBERAL or CONSERVATIVE PARTY.