Dianne Hesselbein is a member of the Wisconsin State Senate, representing District 27. She assumed office on January 3, 2023. Her current term ends on January 4, 2027. Hesselbein is running for re-election to the Wisconsin State Senate to represent District 27. She declared candidacy for the Democratic primary scheduled on August 11, 2026. Hesselbein has served as state Senate minority leader since December 1, 2023.