Democratic presidential hopeful Bernie SandersBernard (Bernie) SandersGrassroots America shows the people support Donald Trump Five former Obama ambassadors back Buttigieg Both sides were wrong about Mueller report, and none of it will likely matter for 2020 MORE said on Sunday that he takes issue with the idea of superdelegates.

"The whole concept of superdelegates is problematic," he said on CBS's "Face The Nation."

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The Vermont senator said he thinks it would be a good idea for superdelegates to come over to his side in states where he has won by a significant margin.

"I think it might be a good idea for superdelegates to listen to the people in their own state," he said.

"I just talked to a person the other day who said, 'You know what? I am going to listen to my state, and if my state votes for you, Bernie, you're going to have my vote.'"

Sanders said that's something he hopes a lot of superdelegates take into consideration, adding that it's "common sense" to listen to the voters.

The superdelegates have the right to make their own decisions, he said, adding that the primary objective is making sure a Republican does not win the White House.

"[If] it appears that I am the stronger candidate against Trump, I think you're doing to see some superdelegates saying, 'You know what, I like Hillary ClintonHillary Diane Rodham ClintonGrassroots America shows the people support Donald Trump Ex-FBI official: 'Links and coordination' with Russia happen everyday Ex-FBI agent: Americans should be 'disgusted' by Russian interference in Mueller report MORE, but I want to win this thing. Bernie is our guy.'"