Story highlights Clinton said her near-lifelong membership to the Democratic Party was "important" in the nomination contest

Sanders has never been a member of the Democratic Party

Eau Claire, Wisconsin (CNN) Hillary Clinton wants voters in Wisconsin to know that she has been a Democrat for much of her adult life. Why? Bernie Sanders hasn't been.

Clinton said her near-lifelong membership to the Democratic Party was "important" in the nomination contest while campaigning here on Saturday, two days ahead of Wisconsin's Democratic primary.

"I am also a Democrat and have been a proud Democrat all my adult life," Clinton said. "And I think that is kind of important if we are selecting someone to be the Democratic nominee of the Democratic Party."

Clinton grew up in a Republican household and was briefly a Republican when she went to Wellesley College in 1965. Shortly after arriving on campus, however, Clinton grew more liberal and has been a member of the Democratic Party since her graduation in 1969.

Sanders, however, has never been a member of the Democratic Party and is one of two independents in the United States Senate.

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