Yeah but Rudy will turn a lot of Dem’s who don’t like Hillary (but would hold their noses to vote for her) his way...especially Democrat Males!
Let me tell you how the "let's run our own liberal" strategy would pan out. Rooty Toot MIGHT pick up a few 'Rats, but nowhere near enough to overcome the number of conservatives who stay home.
Rooty Toot is probably the only candidate who will lose to Hitlery.
Liberals would not vote for Rudy. They hate Rudy because of his authoritarian and pro-war views. Ditto for libertarians. Conservatives would not support Rudy because of his social liberalism.
In 1970 James Buckley of the Conservative Party won the NY Senate race against the RINO and the Rat candidate. It's quite possible that in a similar 3-way race, both Rudy & Hillary would lose to a 3rd party conservative candidate.