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Assembly District 40

Represented by Karen DeSanto, a Democrat, since January 2025. It's one of three Assembly districts in Senate District 14.

Karen DeSanto

State representative. Democrat.

On the ballot

Karen DeSanto is on the November 2026 ballot, running against Julie Helmer, a Republican. See the race

In 2024, the race was decided by 8.2 points.

Their full record

Who has held this seat

From the Legislature's service records, which begin with the 2009 session. District lines were redrawn in 2011, 2022 and 2024, so the area this seat covers has changed over time.

  1. Karen DeSanto Democrat

    Jan 2025 to now

  2. Kevin Petersen Republican

    Jan 2007 to Jan 2025

Election results

Official general-election counts from the Wisconsin Elections Commission. Shares are of all votes cast, including write-ins. Results before 2024 are labeled with the maps they were held under, when this district number covered different ground.

November 2024

Karen DeSanto, a DEM, won with 54.1% of 33,186 votes cast.

Karen DeSanto, DEM: 17,949 54.1% Jerry Helmer, REP: 15,221 45.9%

November 2022 2022 maps

Kevin Petersen, a REP, won with 75.3% of 25,716 votes cast.

Kevin Petersen, REP: 19,361 75.3% Henry Fries, IND: 6,296 24.5%

Boundaries from the Legislative Technology Services Bureau's 2024 maps. Results from the Wisconsin Elections Commission. Checked Sep 15, 2026.