The 2006 United States Senate election in Wisconsin was held November 7, 2006. Incumbent Democratic U.S. Senator Herb Kohl won re-election to his fourth and final term in a landslide. As of , this is the most recent statewide election where any candidate won every county in Wisconsin.
Kohl won every county in the state. Kohl's weakest performance in the state was suburban Washington County, Wisconsin, which he won with just 49.6%. Kohl's strongest performance was in rural Menominee County, where he won with over 90% of the vote. Vogeler's best performance was in Dane County, where she came in third place with over 5%, a county where Lorge had his second weakest performance.
Official campaign websites (Archived)