NEW YORK -- Likability. It’s been Mitt Romney’s Achilles’ heel for years. U.S. voters, polling shows again and again, just don’t like him all that much. And, the same polls show, they like President Obama a good deal better.

Now, with Obama apparently opening a lead over Romney as the presidential campaign enters its final phase, Romney is trying to diminish one of the president’s greatest attributes.

“The president exudes an air of likability and friendliness, which is endearing,” Romney told ABC News. “But at the same time, I think people recognize that he has not done the job they expected him to do and that he promised he would do.”