The closely matched 50% prices on the leading candidates in California's 48th congressional district reflect an open-seat contest made newly competitive by Proposition 50 redistricting, which added Democratic-leaning areas around San Diego and Palm Springs to a district previously held by retiring Republican Darrell Issa. San Diego County Supervisor Jim Desmond advanced from the June primary with strong local name recognition, Trump endorsement, and Republican consolidation, while San Diego City Councilmember Marni von Wilpert topped the Democratic field with labor backing. A July internal poll showed the pair separated by just two points. With the district's partisan voting index near even and few public surveys available, traders see limited separation likely until fall campaign spending, turnout patterns in San Diego and Riverside counties, and any late national shifts define the final margin.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCA-48 House Election Margin of Victory
Democrat 21%+ 43%
Democrat 12-15% 43%
Democrat 9-12% 43%
Democrat 6-9% 43%

Democrat 21%+
43%

Democrat 18-21%
41%

Democrat 15-18%
43%

Democrat 12-15%
43%

Democrat 9-12%
43%

Democrat 6-9%
43%

Democrat 3-6%
40%

Democrat 0-3%
39%

Republican 0-3%
43%

Republican 3%+
43%
Democrat 21%+ 43%
Democrat 12-15% 43%
Democrat 9-12% 43%
Democrat 6-9% 43%

Democrat 21%+
43%

Democrat 18-21%
41%

Democrat 15-18%
43%

Democrat 12-15%
43%

Democrat 9-12%
43%

Democrat 6-9%
43%

Democrat 3-6%
40%

Democrat 0-3%
39%

Republican 0-3%
43%

Republican 3%+
43%
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-48 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.
Market Opened: Sep 2, 2026, 3:40 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-48 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...The closely matched 50% prices on the leading candidates in California's 48th congressional district reflect an open-seat contest made newly competitive by Proposition 50 redistricting, which added Democratic-leaning areas around San Diego and Palm Springs to a district previously held by retiring Republican Darrell Issa. San Diego County Supervisor Jim Desmond advanced from the June primary with strong local name recognition, Trump endorsement, and Republican consolidation, while San Diego City Councilmember Marni von Wilpert topped the Democratic field with labor backing. A July internal poll showed the pair separated by just two points. With the district's partisan voting index near even and few public surveys available, traders see limited separation likely until fall campaign spending, turnout patterns in San Diego and Riverside counties, and any late national shifts define the final margin.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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