Wisconsin State Senate District 15 elects one state senator. On November 3, 2026, the candidates are Mark Spreitzer (Democratic), Scott Fleming (Republican) and Christopher Dean (Serving People Not Parties).
Democratic Incumbent
State senator since 2022; previously served in the State Assembly; Minority Caucus Chair.
Emphasizes childcare, healthcare, and housing costs and the homestead credit (per campaign site).
Supports data-center regulation and addressing utility costs (per campaign site).
Supports public-school funding (per campaign site).
Opposes AI-related price gouging (per campaign site).
Republican
Farmer and crop adviser; Johnstown town supervisor.
Discusses property taxes (per campaign site).
Discusses farm regulation and nitrate reduction (per campaign site).
Supports requiring data centers to pay full costs and meet zoning and environmental standards (per campaign site).
Serving People Not Parties
Army veteran with a deployment to Iraq (per the Recombobulation Area); running under the 'Serving People Not Parties' label. Campaign site provides almost no detailed policy.
No documented positions found in our researched sources.