President Obama could be a stronger candidate in 2012 if he faces a serious primary challenge, Rep. Dennis Kucinich (D-Ohio) said Thursday.

In an interview on C-SPAN, Kucinich said that he was sure Obama would win the nomination, but that a strong challenge could benefit him.

"I think primaries can have the opportunity of raising the issues and making the Democratic candidate a stronger candidate," Kucinich said. "I think it's safe to predict that President Obama will be the nominee of the Democratic Party, but he could be a stronger nominee if he receives a strong challenge in the primary."

Kucinich did not say who that potential challenger might be. Former Sen. Russ Feingold (D-Wis.) has been mentioned as a possible 2012 challenger but he has said he does not want to run. Sen. Bernie Sanders (I-Vt.)'s name has come up as well, but like Feingold, he has said he is not interested.

Kucinich has had to think about his own reelection prospects lately. Ohio’s loss of a congressional seat in the last Census redistricting could cause him to lose his seat.