Ben and Jerry hit the stump for Sanders
© Getty Images

The founders of Ben and Jerry’s are making a fundraising pitch for Sen. Bernie SandersBernard (Bernie) SandersOvernight Finance: Treasury mulls sanctions relief for Russian aluminum firm | Trump floats tying NAFTA talks to border security | 14 states hit record-low unemployment Kamala Harris will no longer accept corporate PAC money Judd Gregg: Who wins with Paul Ryan's departure? MORE’s (I-Vt.) presidential campaign, days before the year-end fundraising deadline.

Ben Cohen and Jerry Greenfield, who co-founded the Vermont-based ice cream chain, sent an email to supporters Tuesday, urging them to volunteer and donate $3 before the Dec. 31 deadline.

The two are ardent supporters of the Vermont senator and frequently stump for him in the early-voting states.

“As we travel the country campaigning for Bernie, we hear a lot of people saying, ‘I love Bernie, but I am not sure he can win,’” Greenfield writes.

“But poll after poll shows Bernie is the most electable Democrat,” Cohen writes. “And that’s because we all know in our hearts that the things Bernie is talking about are true. The system is rigged."

The pair touted the small contributions funding Sanders’s campaign, adding that they have donated themselves and spent money on ice cream for campaign events.

“Every time Bernie ran for office in Vermont, people would say he didn’t have a chance,” Greenfield writes. “And together, I know we’re going to shock the political elite when we win in Iowa next month."

Sanders lags behind Clinton in national polls and in Iowa, but he surpasses her by 6 points in New Hampshire, according to RealClearPolitics averages.