Will the Republican Party win the CA-23 House seat?
Odds, price jumps explained, and what could move it next
Yes at 84% on 5 Nov 2026, down 12 pts over the previous 7 days. 3 big jumps since 4 Nov 2026, listed below.
Data from Polymarket. Numbered dots are the jumps explained below.
Context
We haven’t written context for this market yet.
What could move it next
No upcoming events listed for this market yet.
Price jumps explained
-
5 Nov 2026
Republican Chances Drop in California House Races
Prediction market odds for the Republican Party winning the CA-23 seat dropped significantly as early election results showed a blue wave hitting California. News reports highlighted that Democrats flipped multiple Republican seats across the state during the midterm elections.
Sources: SFGATE: Democrats flip multiple Republican seats as blue wave hits California
After 24 h: too early. After 7 days: too early.
-
4 Nov 2026
Republican Chances Fall in California House Races
Prediction markets showed shifting odds for Republican candidates in California as election results came in. National reports indicated that Democrats were making strong gains in the midterm elections.
Sources: The New York Times: Midterm Elections Live Updates: Democrats Project Power as G.O.P. Reels in a Reordered Washington, Forbes: California Elections: Who’s Leading In Prediction Markets?, Global News: 2026 U.S. midterms: Democrats retake House and Senate as voters deliver stunning rebuke of Trump, GOP
After 24 h: too early. After 7 days: too early.
-
4 Nov 2026
Republican Chances Fall in California House Race
As election night results for California U.S. House of Representatives races emerged, the probability that the Republican Party would win the CA-23 seat dropped significantly from 95% to 64%. Live results and tracking from local media sources reported on the ongoing vote counts during this period.
Sources: KTLA: 2026 Election Results: California U.S. House of Representatives, NBC Los Angeles: See 2026 California election results for U.S. House of Representatives, Los Angeles Daily News: Election results: LA County’s congressional races
After 24 h: reverted. After 7 days: too early.
Written by AI from the linked news sources and checked automatically, not by a person.
Other markets in “CA-23 House Election Winner”
Questions about this market
What are the odds for “Will the Republican Party win the CA-23 House seat”?
On 5 Nov 2026, Polymarket traders priced Yes at 84%, which means they saw about a 84 in 100 chance. That was down 12 points over the previous 7 days. The live price is shown in the chart at the top of this page.
Why did the odds move recently?
The latest explained move was on 5 Nov 2026, from 91% to 67%: Republican Chances Drop in California House Races. Prediction market odds for the Republican Party winning the CA-23 seat dropped significantly as early election results showed a blue wave hitting California. Every big move is listed under “Price jumps explained” (this one is number 3).
Do big jumps in this market usually hold?
Of the 1 big jump old enough to check, 0 held after 24 hours (kept at least 70% of the move). The rest partly or fully reverted.
How does this market resolve?
This market will resolve according to the party of the candidate who wins the CA-23 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. This market will resolve based on the result of the election as indicated by a consensus of credible reporting. The full Polymarket rules are at the bottom of this page.
Can I bet on this market on predictionwave?
No. predictionwave only explains the odds. The market itself runs on Polymarket, and trading there is not allowed in every country.
How this market resolves (Polymarket rules)
This market will resolve according to the party of the candidate who wins the CA-23 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/).