I’m sorry, but that’s delusional. Romney started out as a liberal, lied when he wanted to win the GOP presidential nomination, and then began immediately to revert once that election was over.
Had he won, he would have governed as a liberal. But he would have done it behind a Republican mask, in YOUR name.
No, it’s delusional to think he would have governed like a liberal. That’s not to say he would have been Reagan but he wouldn’t have been like a liberal. And it’s absolutely the case that he wouldn’t have been a leftist wrecking ball like Obama, the guy you helped put in office.