With control of the Wisconsin State Senate expected to hinge on just a handful of suburban swing districts this November, Senate Republicans are entering the campaign with a sizable financial advantage.
New campaign finance reports show the Committee to Elect a Republican Senate (CERS) raised nearly $4.9 million during the latest reporting period and reported more than $5 million in cash on hand. By comparison, the Senate Democratic Campaign Committee (SSDC) raised $2.8 million and reported $2.3 million cash on hand, giving Republicans more than a two-to-one cash advantage heading into the fall campaign. The filings are available through the Wisconsin Ethics Commission’s campaign finance reporting system.
The fundraising numbers come as Democrats view 2026 as their best opportunity in more than a decade to flip the Senate majority.
That optimism stems largely from the legislative maps adopted after the last round of redistricting. Democrats flipped four Senate seats under the new maps in 2024, creating a far more competitive battlefield than Republicans have faced in recent election cycles. This year, three of the four most competitive Senate districts are currently represented by Republicans, and all four were carried by Kamala Harris in the 2024 presidential election, making the path to a Democratic majority clearer than it has been in years.
As The Heartland Post previously reported, the fight for the majority will center on four key races in Senate Districts 5, 17, 21 and 31.
In the suburban 5th Senate District, Republican Dr. Mike Roberts and Democratic Rep. Robyn Vining are competing for the open seat being vacated by Republican Sen. Rob Hutton. Harris carried the Milwaukee- and Waukesha-area district with approximately 52 percent of the vote.
Republican Sen. Howard Marklein is seeking reelection in the southwestern Wisconsin-based 17th Senate District, which Harris carried by roughly one percentage point. Democrats Jenna Jacobson, Corrine Hendrickson and Lisa White are competing in a primary for the opportunity to challenge him.
The open 21st Senate District, where Republican Sen. Van Wanggaard is retiring, pits Republican Jim Croft against Democrat Trevor Jung. Harris carried the Racine- and Milwaukee-area district by approximately 1.2 points.
In western Wisconsin’s 31st Senate District, Republican Michele Magadance Skinner is challenging Democratic Sen. Jeff Smith. Harris won that district by roughly two points.
The political map may give Democrats an opening, but CERS’s fundraising success gives Republicans the resources to compete across all four districts. Its multimillion-dollar cash advantage could fund substantially more television advertising, digital outreach, direct mail and voter-contact operations during the campaign’s decisive final months.
