SimpleFunctions
Winner-take-all · 4 outcomes4 contractsKalshirefreshed 2 min agoCloses Nov 3, 2027 · 543d

Will Democrats win above 49 seats in the 2026 U.S. House of Representatives elections in California

Leader sits at 43% across 4 bound outcomes, runner-up at 17%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.

Leader probability

43%

48

runner-up 17¢leader 43¢

Outcomes

4

winner-take-all

Runner-up

17¢

47

Spread

26pp

contested

24h volume

$0

thin orderbook

Closes

Nov 3, 2027

543 days

Venue

Kalshi

4 bound

30-day trend

0%50%100%-30d-3w-2w-1wtoday48: 43% (6 days, 2 points)48: 43% on 2026-04-2347: 18% (6 days, 5 points)47: 18% on 2026-04-2349: 9% on 2026-04-10
4843¢4718¢499¢
Top 3 candidates by current price · 6d

Bracket family

How the bracket ladder is priced.

Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.

Analysis

This contract asks whether Democrats will win more than 49 seats in California's 2026 House elections. At 43%, the market implies Democrats are slightly more likely to fall at or below 49 seats than exceed it. California's House delegation has trended Democratic in recent cycles, and Democrats currently hold most of the state's districts. The outcome depends primarily on national midterm dynamics, turnout patterns, and candidate quality in competitive districts. The main uncertainty driver is how strongly or weakly Democrats perform nationwide in 2026—a strong national performance would likely push them above 49 California seats, while significant losses would keep them at or below that threshold. Results will be determined on election day, November 3, 2026.

  • Democrats currently hold approximately 43 of California's 52 House seats, meaning they need net gains in an already-controlled state to exceed 49 seats
  • The 43% probability implies the market views sub-50 Democratic seats as a modestly more likely outcome than above 50, suggesting expectations of modest net losses or minimal gains
  • National House performance in 2026 midterms will be a primary driver—strong Democratic national results would likely lift California above 49, while major losses would depress it below
  • California's electoral composition and voter registration patterns have become increasingly Democratic-leaning, which could support maintaining or growing the current delegation
  • Redistricting effects from the 2020 census are now fixed in place, removing that source of uncertainty and locking in the competitive landscape for this election cycle

Recently closed in election 2026

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

Last updated on this page: 2 min ago.