Incumbent Democrat Jim Costa and Republican challenger Kyle Kirkland advanced from the June 2026 top-two primary to contest California's 21st congressional district on November 3. Costa's established record in the agriculture-heavy Central Valley seat, combined with the district's modest Democratic lean, supports his position, yet Kirkland's business background and prior candidacy have kept the race within reach. Prediction market pricing on margins reflects this balance, with outcomes clustered around narrow Democratic or Republican pluralities rather than decisive leads. Limited new polling or major campaign developments since the primary have left voter turnout patterns, local economic issues, and late-cycle messaging as the primary variables that could widen the final margin in either direction.
Ringkasan eksperimental yang dihasilkan AI dengan referensi data Polymarket. Ini bukan saran trading dan tidak berperan dalam bagaimana pasar ini diselesaikan. · DiperbaruiCA-21 House Election Margin of Victory
Democrat 25%+ 42%
Democrat 5-10% 41%
Republican 0-5% 41%
Democrat 15-20% 40%

Democrat 25%+
42%

Democrat 20-25%
38%

Democrat 15-20%
40%

Democrat 10-15%
37%

Democrat 5-10%
41%

Democrat 0-5%
39%

Republican 0-5%
41%

Republican 5%+
38%
Democrat 25%+ 42%
Democrat 5-10% 41%
Republican 0-5% 41%
Democrat 15-20% 40%

Democrat 25%+
42%

Democrat 20-25%
38%

Democrat 15-20%
40%

Democrat 10-15%
37%

Democrat 5-10%
41%

Democrat 0-5%
39%

Republican 0-5%
41%

Republican 5%+
38%
This market will resolve according to the margin of victory between the top two candidates in the specified election.
The "margin of victory" is defined as the absolute difference between the percentages of valid votes received by the first-place and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election.
The options for "Democrat" and "Republican" refer to any representative of the Democratic Party and Republican Party, respectively, appearing on the general election ballot.
If the reported value falls exactly between two brackets, then this market will resolve to the higher margin bracket.
If two or more candidates tie for the most valid votes in this election, and the tie is between two candidates listed, this market will resolve to the lowest margin bracket for the candidate whose ballot-listed last name comes first in alphabetical order. If the tie is between a listed candidate and an unlisted candidate, this market will resolve to the lowest margin bracket for the listed candidate. If the tie is between two or more unlisted candidates, this market will resolve to "Other." If the listed candidate is represented in this market group as "Republican" or "Democrat" their ballot-listed last name will still be used for tiebreaking.
This market will resolve based on the official vote count once the count has been made official.
If the election results are not known definitively by June 30, 2027, 11:59 PM ET, this market will resolve to "Other".
If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official.
The primary resolution source for this market will be the official results of the 2026 CA-21 House election as published by the state electoral authority responsible for certifying the results of the election; however, an overwhelming consensus of credible reporting may also be used.
Pasar Dibuka: Sep 2, 2026, 3:32 PM ET
Resolver
0x69c47De9D...This market will resolve according to the margin of victory between the top two candidates in the specified election.
The "margin of victory" is defined as the absolute difference between the percentages of valid votes received by the first-place and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election.
The options for "Democrat" and "Republican" refer to any representative of the Democratic Party and Republican Party, respectively, appearing on the general election ballot.
If the reported value falls exactly between two brackets, then this market will resolve to the higher margin bracket.
If two or more candidates tie for the most valid votes in this election, and the tie is between two candidates listed, this market will resolve to the lowest margin bracket for the candidate whose ballot-listed last name comes first in alphabetical order. If the tie is between a listed candidate and an unlisted candidate, this market will resolve to the lowest margin bracket for the listed candidate. If the tie is between two or more unlisted candidates, this market will resolve to "Other." If the listed candidate is represented in this market group as "Republican" or "Democrat" their ballot-listed last name will still be used for tiebreaking.
This market will resolve based on the official vote count once the count has been made official.
If the election results are not known definitively by June 30, 2027, 11:59 PM ET, this market will resolve to "Other".
If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official.
The primary resolution source for this market will be the official results of the 2026 CA-21 House election as published by the state electoral authority responsible for certifying the results of the election; however, an overwhelming consensus of credible reporting may also be used.
Resolver
0x69c47De9D...Incumbent Democrat Jim Costa and Republican challenger Kyle Kirkland advanced from the June 2026 top-two primary to contest California's 21st congressional district on November 3. Costa's established record in the agriculture-heavy Central Valley seat, combined with the district's modest Democratic lean, supports his position, yet Kirkland's business background and prior candidacy have kept the race within reach. Prediction market pricing on margins reflects this balance, with outcomes clustered around narrow Democratic or Republican pluralities rather than decisive leads. Limited new polling or major campaign developments since the primary have left voter turnout patterns, local economic issues, and late-cycle messaging as the primary variables that could widen the final margin in either direction.
Ringkasan eksperimental yang dihasilkan AI dengan referensi data Polymarket. Ini bukan saran trading dan tidak berperan dalam bagaimana pasar ini diselesaikan. · Diperbarui
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