While Giuliani is left-leaning, neither Romney nor McCain are. They're not perfect conservatives, but their records aren't left-leaning. That being said, McCain is totally whacko and I can't support him. And if you look at Romney's record you'll find that he's not as bad as some (including me at one time) have made him out to be.
I view McCain’s restrictions on speech as “left.” Guess you could view them as far right as easily . . . but it’s still totalitarian . . .
Did you see the 1994 clip of Romney debating Kennedy? I should have saved it in my links . . . but he talked up abortion, homosexual rights, and attacked Reagan. It was ugly and definitely left.