California’s June 2, 2026, nonpartisan primary for the U.S. House District 4 featured incumbent Democrat Mike Thompson seeking a 15th term against challengers including Democrat Eric Jones and Republicans Ray Riehle, Sharon Brown, and others. Proposition 50 redistricting added substantial rural territory from Colusa, Placer, Sacramento, Sutter, and Yuba counties to the previous North Bay-focused seat, altering the electorate. Official tallies showed Thompson receiving the most votes at roughly 37 percent, followed by Riehle near 24 percent and Jones near 21 percent, positioning the top two to advance under California’s top-two system. No further primary ballots or recounts remain pending, with the general election scheduled for November 3, 2026.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$43,979 Vol.
Mike Thompson
100%
Eric Jones
72%
Sharon Brown
5%
John Wesley Tyler
1%
Laurie MacKenzie
1%
Mandy Ghusar
1%
Trevor Merrell
<1%
Heath Fulkerson
<1%
$43,979 Vol.
Mike Thompson
100%
Eric Jones
72%
Sharon Brown
5%
John Wesley Tyler
1%
Laurie MacKenzie
1%
Mandy Ghusar
1%
Trevor Merrell
<1%
Heath Fulkerson
<1%
This market will resolve "Yes" if the listed candidate advances from the primary to contest the seat for California's 4th congressional district in the U.S. House of Representatives in the 2026 midterm elections. Otherwise, this market will resolve to "No".
If no nominees are announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other".
The resolution source for this market will be a consensus of official sources, including https://www.sos.ca.gov/.
Any replacement of the nominees before election day will not change the resolution of the market.
Market Opened: Feb 26, 2026, 5:37 PM ET
Resolver
0x65070BE91...This market will resolve "Yes" if the listed candidate advances from the primary to contest the seat for California's 4th congressional district in the U.S. House of Representatives in the 2026 midterm elections. Otherwise, this market will resolve to "No".
If no nominees are announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other".
The resolution source for this market will be a consensus of official sources, including https://www.sos.ca.gov/.
Any replacement of the nominees before election day will not change the resolution of the market.
Resolver
0x65070BE91...California’s June 2, 2026, nonpartisan primary for the U.S. House District 4 featured incumbent Democrat Mike Thompson seeking a 15th term against challengers including Democrat Eric Jones and Republicans Ray Riehle, Sharon Brown, and others. Proposition 50 redistricting added substantial rural territory from Colusa, Placer, Sacramento, Sutter, and Yuba counties to the previous North Bay-focused seat, altering the electorate. Official tallies showed Thompson receiving the most votes at roughly 37 percent, followed by Riehle near 24 percent and Jones near 21 percent, positioning the top two to advance under California’s top-two system. No further primary ballots or recounts remain pending, with the general election scheduled for November 3, 2026.
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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