If former secretary of state Hillary Clinton runs for president in 2016, don't expect Vice President Biden to clear her path to the nomination, former New Mexico governor Bill Richardson (D) said Sunday.

"Yeah I think Joe Biden would not defer," Richardson said on ABC News's "This Week With George Stephanopoulos." "I think he would run. Hillary Clinton would be formidable, no question about it. But I've known Biden over the years. He is somebody who's always wanted to be president. He's got the eye of the tiger."

Polls show Clinton would be a huge favorite to win the Democratic nomination if she runs.