Democratic presidential hopeful Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE said in an interview aired Sunday that he would not accept help from super-PACs if he were to face presumptive Republican presidential nominee Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE in November.

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Sanders was asked on CBS’s “Face the Nation” how he would compete with “the billions of dollars on the other side.”

“The Republicans and the Koch brothers and Sheldon Adelson and all these billionaires will pour a whole lot of money into the campaign,” he said. “We have done incredibly well so far in terms of fundraising. By appealing to the middle class and working class of this country, we have gotten almost 8 million individual campaign contributions. Twenty-seven [dollars] on average. That is what I will do in a general election.”

Sanders said he would expect his contributions to increase fivefold in a general election match-up.

“I will win this campaign when you have 8, 10 million people contributing 25, 30 bucks, who are involved in the process,” he said. “Who are prepared to take on the big super-PACs and the billionaires who will fund Trump's campaign.”

Sander said he will continue to depend on the middle class.

“An incredible number of small individual campaign contributions is how we'll fund our campaign, and it is how we will win the national election.”