WASHINGTON (AP) - Vice President Joe Biden says one reason he thinks Democratic presidential nominee Hillary Clinton has a tougher time appealing to some voter groups like working-class whites is because "there is a sort of double standard for a woman candidate."

Biden says in an interview airing Sunday on NBC's "Meet the Press" that Democrats could do more to speak to the struggles of a family making $80,000 to $100,000 a year with a couple of children. Biden says it's important to talk directly to them and show them more respect.

He says Clinton is very concerned about these people and needs to show them "where her heart is, what she cares about."

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