Bernie SandersBernie SandersRussian interference reports rock Capitol Hill The Democratic nominee won't be democratically chosen Fox's Ingraham mocks DNC over Nevada voting malfunctions: 'Are we a Third World country?' MORE on Tuesday said he expects younger voters to come on board Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonRussian interference reports rock Capitol Hill Judge dismisses Nunes' lawsuit against Fusion GPS The Hill's Campaign Report: What to watch for in Nevada MORE's campaign.

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The Vermont senator said he will be campaigning with the Democratic nominee on Wednesday in New Hampshire, where the two will be talking about a "pretty radical" education proposal. 

"And that proposal is that any family in America earning $125,000 or less, that's about 83 percent of our population, will be able to send their kids to a public college or university tuition free," Sanders said Tuesday on MSNBC.

"And Clinton also has a proposal — significant proposal — to reduce student debt."

Sanders then hit on Clinton's Republican rival, Donald TrumpDonald John TrumpWhere do we go from here? Conservation can show the way Gov. Ron DeSantis more popular in Florida than Trump Sotomayor accuses Supreme Court of bias in favor of Trump administration MORE, for his position on climate change and said young people will be drawn to Clinton's campaign because of her positions on several issues.

"Add to that the fact that Donald Trump's position on climate change — where he thinks it's a hoax — is totally absurd," Sanders said.

"I think that a lot of the younger people are concerned about the cost of college, concerned about climate change, concerned about women's rights, they're going to come on board Secretary Clinton's campaign."

Clinton has been struggling with her support among millennial voters and has been working to capture some of Sanders's appeal with that voting bloc.

According to an NBC News/SurveyMonkey survey conducted from Sept. 19-25, Clinton was favored by 49 percent of likely voters ages 18 to 29.

Trump had the support of 26 percent of younger voters, and Libertarian nominee Gary JohnsonGary Earl JohnsonWeld bets on New Hampshire to fuel long shot bid against Trump The 'Green' new deal that Tom Perez needs to make The Trump strategy: Dare the Democrats to win MORE and Green Party nominee Jill Stein were backed by a combined 23 percent of the millennial vote.