Updated Oct 16, 2026, 1:45 PM ET
House · 3 November 2026

CA-31 House 2026

96.0% DGil Cisneros leads TruthIndex™Safe D
Polymarket
95.8%
Kalshi
97.8%
Spread
2.0 pts
24h
–
7 days
−0.1
Updated
Oct 16, 2026, 1:45 PM ET
Latest coverage

Live News

Recent coverage for CA-31 House.

  1. Races in redrawn districts could determine control of House | California

    Races: Ken Calvert (R-Corona) and Young Kim (R-Anaheim) are the two incumbents at the top of the ticket in the redrawn CA-40, seeking reelection.

  2. ANCA Endorses Congressional Allies; Grades Members of Congress on Pro-Armenian Priorities

    Rep. Scott Eugene DesJarlais (R-TN-04) – C [...] Rep. Janelle Bynum (D-OR-05) – C

  3. OC District 45

    The article covers Orange County’s 45th Congressional District (CA-45), not CA-31.

  4. Meet the candidates in Ventura County's biggest congressional district

    The article profiles candidates for California’s 26th Congressional District ( Ventura County’s largest district), where Democrat Jacqui Irwin (state assembly veteran) and Republican Sam Gallucci (pastor and former tech…

    Ventura County StarIrwinChingHannonVerlato
  5. How Congress is cashing in on the AI boom

    The Washington Post report notes that Congress has yet to regulate AI amid rising threats, while lawmakers personally profit from the AI boom.

    Washington PostCisneros
More coverage 1
  1. Pan Challenges Kiley for California's 6th Congressional District · AllCiv

    The article discusses a California House race in the newly drawn 6th Congressional District for the Nov. 3 election, featuring Democrat Richard Pan vs. Rep. Kevin Kiley (R-CA).

    allciv.comChingHoelterKurdian

Gil Cisneros, last 60 days

How to read this chart

The green line is the TruthIndex™, the chance of this outcome. It combines the prices on both venues and gives more weight to the venue with more money in its order book. The two thinner lines are Polymarket's and Kalshi's own prices, and the grey band between them shows how far apart the two venues are.

The pale bands behind the lines are the rating zones (Toss-up, Lean, Likely and Safe), so you can see when the race moved from one rating to another. Move along the chart, or use the arrow keys, to read the values for each day.

More in Methodology
TruthIndex™PolymarketKalshiGap between the venuesRating zones

All outcomes

OutcomeTruthIndex™PolymarketKalshiSpread24h
DGil Cisneros 96.0% 95.8% 97.8% 2.0 pts –
REric Ching 3.6% 3.7% 2.2% 1.5 pts –

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Candidates & Background

Eric Ching

Republican

Eric Ching, a Republican and former Walnut city councilor, faces Democratic incumbent Gil Cisneros in the 2026 general election for California's 31st congressional district after finishing second in the top-two primary.

Gil Cisneros

Gil Cisneros

Democratic U.S. Representative for California's 31st congressional district (since 2025)

Gil Cisneros, a Democrat and former Under Secretary of Defense for Personnel and Readiness who has represented California's 31st congressional district since 2025, faces Republican Eric Ching, a former Walnut city councilor, in 2026.

Born 1971 · Torrance, California

Margin of victory

Each venue's margin market, shown on its own: the two venues set their ranges differently.

Kalshi3 contracts

California's 31st District margin of victory

Cisneros, 15+ pts
86.9%
Cisneros, 18+ pts
77.0%
Cisneros, 21+ pts
63.5%
Cisneros, 24+ pts
–
Cisneros, 27+ pts
–
Cisneros, 30+ pts
22.0%
Cisneros, 33+ pts
12.3%
Cisneros, 36+ pts
5.5%
Cisneros, 39+ pts
4.1%
Source: Kalshi market

Each venue's market

Polymarket$18.6K traded

Prices which party wins.

Gil Cisneros: Counted · bid 94.8% / ask 96.7% · $3.6K within 5 pts

This market will resolve according to the party of the candidate who wins the CA-31 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026. ​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources. This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).

Full rules on Polymarket

Kalshi458 contracts traded

Prices which party wins.

Gil Cisneros: Counted · bid 95.9% / ask 99.7% · $582 within 5 pts

Contract shown: Gil Cisneros

If the House member sworn in for CA-31 for the term beginning in 2027 is a member of the Democratic Party, then the market resolves to Yes.

This market is eligible for accelerated determination after a consensus of media organizations project the winner. See full rules for details.

Full rules on Kalshi