Wisconsin's 40th Assembly district

Wisconsin's 40th State Assembly district
From 2024 to 2031 From 2022 to 2023 From 2012 to 2021 2024 map defined in 2023 Wisc. Act 94 2022 map defined in Johnson v. Wisconsin Elections Commission 2011 map was defined in 2011 Wisc. Act 43
Assemblymember	Karen DeSanto D–Baraboo since January 6, 2025 (0 years)
Demographics	90.56% White 2.1% Black 3.83% Hispanic 0.94% Asian 1.74% Native American 0.08% Hawaiian/Pacific Islander
Population (2020)  • Voting age	59,478 47,068
Website	Official website
Notes	Central Wisconsin

The 40th Assembly district of Wisconsin is one of 99 districts in the Wisconsin State Assembly.^[1] Located in central Wisconsin, the district comprises parts of northern Columbia County and eastern and southern Sauk County. It includes the cities of Baraboo, Portage, Prairie du Sac, and Sauk City, and the villages of Merrimac, Pardeeville, Plain, Spring Green, and West Baraboo. The district also contains Devil's Lake State Park and Natural Bridge State Park.^[2] The district is represented by Democrat Karen DeSanto, since January 2025.^[3]

The 40th Assembly district is located within Wisconsin's 14th Senate district, along with the 41st and 42nd Assembly districts.^[4]

• 
  Baraboo, Wisconsin
• 
  Natural Bridge State Park
• 
  Devil's Lake State Park
• 
  Aerial view of Portage

List of past representatives

List of representatives to the Wisconsin State Assembly from the 40th district

Member	Party	Residence	Counties represented	Term start	Term end	Ref.
District created
Francis R. Byers	Rep.	Marion	Outagamie, Shawano, Waupaca	January 1, 1973	January 3, 1983
Earl Gilson	Dem.	River Falls	Pierce, St. Croix	January 3, 1983	January 7, 1985
Francis R. Byers	Rep.	Marion	Outagamie, Waupaca	January 7, 1985	January 2, 1989
William Lorge	Rep.	Deer Creek		January 2, 1989	January 4, 1999
Jean Hundertmark	Rep.	Clintonville		January 4, 1999	January 1, 2007
Kevin D. Petersen	Rep.	Waupaca	Waupaca, Waushara	January 1, 2007	January 6, 2025	[5]
			Outagamie, Waupaca, Waushara
Karen DeSanto	Dem.	Baraboo	Columbia, Sauk	January 6, 2025	Current	[3]

References

1. "Assembly District 40". Wisconsin Legislature. Retrieved February 1, 2021.
2. "Wisconsin Legislative Districts - Assembly District 40 Boundaries". Wisconsin Legislature. Retrieved February 1, 2021.
3. "Representative Karen DeSanto". Wisconsin Legislature. Retrieved January 6, 2025.
4. An Act ... relating to: legislative redistricting (Act 94). Wisconsin Legislature. 2023. Retrieved February 23, 2024.
5. "Representative Kevin Petersen". Wisconsin Legislature. Retrieved January 6, 2025.