2000 United States Senate election in Wisconsin

The 2000 United States Senate election in Wisconsin took place on November 7, 2000. Incumbent Democratic U.S. Senator Herb Kohl won re-election to a third term by a margin of 24.5%. Herb Kohl defeated John Gillespie in a landslide despite Al Gore narrowly winning Wisconsin over Republican presidential nominee George Walker Bush in the concurrent presidential election.

Democratic

 * Herb Kohl, incumbent U.S. Senator

Republican

 * John Gillespie, founder of Rawhide Boys Ranch
 * William Lorge, former State Representative

Counties that flipped Democratic to Republican

 * Outagamie (largest city: Appleton)

Counties that flipped from Republican to Democratic

 * Shawano (largest city: Shawano)
 * Fond du Lac (Largest city: Fond du Lac)
 * Juneau (largest city: Mauston)