Democratic presidential candidate Bernie Sanders Bernard (Bernie) SandersSenate Dems seek to turn tables on GOP in climate change fight Bernie Sanders Town Hall finishes third in cable news race, draws 1.4 million viewers Woman to undecided Biden: 'Just say yes' to 2020 bid MORE Thursday tried to woo Pennsylvania voters by brandishing Joe Biden Joseph (Joe) Robinette BidenWoman to undecided Biden: 'Just say yes' to 2020 bid Poll shows Biden leads Democrats vying for 2020 nomination The Hill's Morning Report - Dems appear to have votes to counter Trump on emergency MORE's recent comments about his idealism.

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Biden, who is from Scranton, Pa., said in a New York Times interview released Thursday that he prefers Sanders’s aspirational campaign style over Hillary Clinton Hillary Diane Rodham ClintonREAD: Cohen testimony alleges Trump knew Stone talked with WikiLeaks about DNC emails County GOP in Minnesota shares image comparing Sanders to Hitler Holder: 'Time to make the Electoral College a vestige of the past' MORE’s caution.

“I like the idea of saying, ‘We can do much more,’ because we can,” the vice president said. “I don’t think any Democrats ever won saying, ‘We can’t think that big — we ought to really downsize here because it’s not realistic.'"

At his rally, Sanders called Biden “a great son of Pennsylvania.”

“I think the vice president is exactly right," Sanders said. "That is what this campaign is about."

Biden, like President Obama, has remained neutral in the Democratic primaries so far, though Obama did in March urge Democratic donors privately to rally around Clinton, saying Sanders’s presidential campaign was nearing its endpoint.