California's congressional map, redrawn after voters approved Proposition 50 in late 2025, stands as the dominant factor shaping trader expectations for Democratic gains. The new lines convert several Republican-held districts into stronger Democratic territory, with analysts projecting a net pickup of three to five seats from the current 43-9 split. June 2026 primary results reinforced this positioning, as Democrats advanced competitive candidates in targeted areas including the reconfigured 1st and 22nd districts while Republicans face internal matchups or tougher terrain in places like the 6th and 48th. Recent Inside Elections rating shifts further solidified several California contests as Democratic leans or locks, though a handful of races—such as the Valadao seat—remain closer and could limit the total to the mid-40s range depending on turnout and national conditions heading into November.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated48 59%
47 18%
49+ 6.6%
44 5.4%
NEW
NEW
Nov 2, 2026
<43
1%
43
1%
44
5%
45
3%
46
4%
47
18%
48
59%
49+
7%
48 59%
47 18%
49+ 6.6%
44 5.4%
NEW
NEW
Nov 2, 2026
<43
$111 Vol.
1%
43
$111 Vol.
1%
44
$136 Vol.
5%
45
$111 Vol.
3%
46
$504 Vol.
4%
47
$3,842 Vol.
18%
48
$2,806 Vol.
59%
49+
$287 Vol.
7%
This market will resolve according to the number of seats in the US House of Representatives won by the Democratic Party in California in the 2026 United States midterm election.
All California US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.
The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.California's congressional map, redrawn after voters approved Proposition 50 in late 2025, stands as the dominant factor shaping trader expectations for Democratic gains. The new lines convert several Republican-held districts into stronger Democratic territory, with analysts projecting a net pickup of three to five seats from the current 43-9 split. June 2026 primary results reinforced this positioning, as Democrats advanced competitive candidates in targeted areas including the reconfigured 1st and 22nd districts while Republicans face internal matchups or tougher terrain in places like the 6th and 48th. Recent Inside Elections rating shifts further solidified several California contests as Democratic leans or locks, though a handful of races—such as the Valadao seat—remain closer and could limit the total to the mid-40s range depending on turnout and national conditions heading into November.
This market will resolve according to the number of seats in the US House of Representatives won by the Democratic Party in California in the 2026 United States midterm election.
All California US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.
The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.
All California US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.
The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.
Market Opened: Aug 11, 2026, 10:18 AM ET
Volume
$7,908End Date
Nov 3, 2026Market Opened
Aug 11, 2026, 10:18 AM ETResolver
0x69c47De9D...This market will resolve according to the number of seats in the US House of Representatives won by the Democratic Party in California in the 2026 United States midterm election.
All California US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.
The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.California's congressional map, redrawn after voters approved Proposition 50 in late 2025, stands as the dominant factor shaping trader expectations for Democratic gains. The new lines convert several Republican-held districts into stronger Democratic territory, with analysts projecting a net pickup of three to five seats from the current 43-9 split. June 2026 primary results reinforced this positioning, as Democrats advanced competitive candidates in targeted areas including the reconfigured 1st and 22nd districts while Republicans face internal matchups or tougher terrain in places like the 6th and 48th. Recent Inside Elections rating shifts further solidified several California contests as Democratic leans or locks, though a handful of races—such as the Valadao seat—remain closer and could limit the total to the mid-40s range depending on turnout and national conditions heading into November.
This market will resolve according to the number of seats in the US House of Representatives won by the Democratic Party in California in the 2026 United States midterm election.
All California US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.
The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.
All California US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.
The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.
Volume
$7,908End Date
Nov 3, 2026Market Opened
Aug 11, 2026, 10:18 AM ETResolver
0x69c47De9D...California's congressional map, redrawn after voters approved Proposition 50 in late 2025, stands as the dominant factor shaping trader expectations for Democratic gains. The new lines convert several Republican-held districts into stronger Democratic territory, with analysts projecting a net pickup of three to five seats from the current 43-9 split. June 2026 primary results reinforced this positioning, as Democrats advanced competitive candidates in targeted areas including the reconfigured 1st and 22nd districts while Republicans face internal matchups or tougher terrain in places like the 6th and 48th. Recent Inside Elections rating shifts further solidified several California contests as Democratic leans or locks, though a handful of races—such as the Valadao seat—remain closer and could limit the total to the mid-40s range depending on turnout and national conditions heading into November.
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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