Overview
The highest court in the State of Wisconsin. Since 2023, it has been the most closely watched state supreme court in the country — a swing court whose ideological control flipped from conservative to liberal with Janet Protasiewicz’s 2023 win and has consolidated since. Off-cycle judicial races for this court have become bellwethers for national midterm sentiment.
Key Facts
- Liberal majority since 2023 (Protasiewicz win)
- April 7, 2026: Chris Taylor won the seat held by retiring conservative Rebecca Bradley with 61%, expanding the liberal majority to 5-2 Newsweek — Liberal flips Conservative Wisconsin Supreme Court seat
- Recent flips: 2020 (Karofsky beats Kelly), 2023 (Protasiewicz beats Kelly again), 2025 (Crawford beats Schimel by ~10 points despite Elon Musk donations to Schimel), 2026 (Taylor beats Lazar by ~22 points)
- Justice Annette Ziegler announced retirement in March 2026 — another seat opens 2027
- Wisconsin races have featured massive outside money, including from billionaire donors
- Pattern: Democratic-leaning voters more active in spring/special elections; Republican-leaning voters more active when Trump on ballot (per Barry Burden, UW-Madison)
Newsletter Relevance
Wisconsin’s Supreme Court is the cleanest empirical case for the differential-engagement theory of contemporary U.S. politics. Same state, same voters, opposite outcomes depending on which group shows up. Four consecutive liberal wins for what was a swing court signals a structural shift in Wisconsin’s off-cycle electorate, not a cyclical mood swing. It’s also the clearest test of whether billionaire money can move state court races at the margin — recent answer: no.
Connections
- Chris Taylor — incoming liberal justice (2026 win)
- Maria Lazar — defeated 2026 conservative candidate
- Janet Protasiewicz — 2023 flip justice
- Susan Crawford — 2025 winner; defeated Musk-funded Schimel
- Jill Karofsky — current chief justice; 2020 winner
- Rebecca Bradley — outgoing conservative justice (Taylor’s predecessor)
- Annette Ziegler — outgoing conservative justice; opens 2027 seat
- Elon Musk — funded losing Schimel campaign in 2025
- Differential Voter Engagement — the structural theory the court’s recent results vindicate
Source Appearances
- Newsweek — Liberal flips Conservative Wisconsin Supreme Court seat — Taylor’s April 7, 2026 win and the broader pattern
Open Questions
- What concrete rulings has the liberal majority issued since 2023, and how have they reshaped Wisconsin law?
- What is the 2027 race likely to look like? Is the conservative bench deep enough to defend the Ziegler seat?
- Does the Musk-funded loss in 2025 deter or accelerate billionaire spending in the next cycle?