Democratic presidential hopeful Bernie Sanders plans to launch his television advertising campaign in Iowa and New Hampshire this week with a 60-second spot that highlights his biography and promises “a future to believe in.”

Advisers hope that the ad buy will give Sanders a boost in two key states where Hillary Rodham Clinton, the front-runner for the Democratic nomination, has been on the air since August and has grown stronger recently in the polls. The Sanders campaign is spending $2 million to air the ad over the next 10 days.

"Thousands of Americans have come out to see Bernie speak, and we've seen a great response to his message,"said  Jeff Weaver, Sanders's campaign manager. "This ad marks the next phase of this campaign. We're bringing that message directly to the voters of Iowa and New Hampshire."

Through a rapid-fire series of images, Sanders’s spots trace the rise of “the son of a Polish immigrant who grew up in a Brooklyn tenement,” touching on his tenures as mayor of Burlington and in both chambers of Congress, where he “stood up for working families and for principle.”

The ads also feature footage from his presidential rallies, some have which drawn more than 20,000 people, and pledge that Sanders will take on Wall Street reform and climate change and fight for “living wages” and tuition-free college.

In recent weeks, Sanders has been far aggressive in drawing contrasts with Clinton on policy issues and has begun mentioning her by name in his speeches, something he avoided in the first several months of his campaign.

His first ad makes no mention of Clinton whatsoever and includes no explicit contrasts. A few areas in which Sanders differs with Clinton are referenced, however, including his 2002 vote against the Iraq war as a member of the House of Representatives. Clinton voted to authorize the use of force as a senator representing New York.

The ad closes by offering Sanders as “an honest leader” who is “building a movement with you, to give us a future to believe in.”