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Jon Tester: The Montana farmer who went to Washington

While growing up in Montana, Senator Jon Tester dreamt of a career in music, but his life was changed by an early tragedy. Tester took over the family business, and eventually entered politics, where he's currently serving his third term in the U.S. Senate. He's picked some pretty big fights in D.C. along the way and in his new book, "Grounded," he has a message for both parties.
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