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County Results
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The 2002 United States Senate election in Iowa was held on November 5, 2002. Incumbent Democratic United States Senator Tom Harkin sought re-election to a fourth term in the United States Senate. Harkin was opposed in the general election by United States Congressman Greg Ganske, who fought off a surprisingly difficult challenger in the Republican primary. Though Harkin had narrowly defeated his opponent six years earlier, he was able to defeat Ganske by a fairly comfortable margin to win re-election.