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 chief strategist, Joel Benenson, said Sunday he doesn't think the Democratic National Committee (DNC) had a large influence during the primary season.

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Benenson said close to 30 million people voted during the course of the primaries and Clinton, now the presumptive Democratic presidential nominee, won a vast majority of delegates.

Benenson said he thinks the DNC will conduct a full review of all of the leaked emails and said people shouldn't jump to conclusions about the emails until the full review is conducted.

"These primaries are largely fought out on the ground, with voters," he said.

"The DNC's impact in these things is minimal compared to the results."

The aide also said the person who sent an email questioning Sanders's religion has apologized.

"We don't believe anybody's religion should ever be an issue in any campaign," Benenson said.