**Union Centriste currently holds 59 seats in the French Senate, with 30 of them renewing on September 27, 2026.** Trader consensus around 59-61 seats reflects expectations of broad stability, as group president Hervé Marseille has emphasized that recent municipal gains (such as in Mulhouse and Cholet) should offset isolated losses in other departments. The indirect electoral college, composed of local officials, favors continuity for the centrist group amid a right-center local majority that supports the Senate's overall right-center dominance alongside Les Républicains. No major national polling or late shifts have altered this outlook in recent weeks, though the Rassemblement National's push for its first Senate group and left-wing efforts to consolidate lists introduce minor uncertainty in specific departments. Outcomes in the 56-64 range dominate probabilities because the system rewards established local networks over dramatic swings, with UC positioned to maintain its role in the majority without significant net change.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedUnion Centriste Seat Count after French Senate Election?
Union Centriste Seat Count after French Senate Election?
59-61 37%
56-58 26%
62-64 15.5%
53-55 11%
NEW
NEW
Oct 31, 2026
<53
1%
53-55
11%
56-58
26%
59-61
37%
62-64
16%
65-67
10%
68+
1%
59-61 37%
56-58 26%
62-64 15.5%
53-55 11%
NEW
NEW
Oct 31, 2026
<53
$142 Vol.
1%
53-55
$425 Vol.
11%
56-58
$2,248 Vol.
26%
59-61
$1,622 Vol.
37%
62-64
$287 Vol.
16%
65-67
$163 Vol.
10%
68+
$120 Vol.
1%
The 2026 French Senate election is scheduled for September 27, 2026, renewing série 2 — 178 of the Senate's 348 seats. The new senators are currently scheduled to take office on October 1, 2026, and the deadline for submitting new political-group membership lists and political declarations is currently set for October 5, 2026, at 4:00 PM CEST.
This market will resolve according to the number of French Senate seats held by the Groupe Union Centriste as of October 12, 2026, 4:00 PM CEST.
The seat count will be the group's total membership as published by the French Senate (senat.fr), counting members (membres), related (apparentés), and affiliated (rattachés).
A group will qualify as the Groupe Union Centriste if it satisfies at least one of the following:
- Its official name includes "Union Centriste" or a clear variant thereof;
- Its political declaration published in the Official Journal (Journal Officiel) of France identifies it as a continuation of the group; or
- It is publicly recognized as the continuation of the Groupe Union Centriste, and this characterization is confirmed by a consensus of credible reporting.
A group that changes its name will continue to qualify if it meets at least one of the criteria above. If the group merges with one or more other groups, this market will resolve according to the total membership of the merged group, provided the merged group meets at least one of the criteria above.
If no group qualifies, or group composition is not officially published, as of October 12, 2026, 4:00 PM CEST, this market will resolve to the lowest bracket.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
The administrative meeting of senators not appearing on the list of any group (RASNAG) will not qualify as a group for the purposes of this market.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.**Union Centriste currently holds 59 seats in the French Senate, with 30 of them renewing on September 27, 2026.** Trader consensus around 59-61 seats reflects expectations of broad stability, as group president Hervé Marseille has emphasized that recent municipal gains (such as in Mulhouse and Cholet) should offset isolated losses in other departments. The indirect electoral college, composed of local officials, favors continuity for the centrist group amid a right-center local majority that supports the Senate's overall right-center dominance alongside Les Républicains.
No major national polling or late shifts have altered this outlook in recent weeks, though the Rassemblement National's push for its first Senate group and left-wing efforts to consolidate lists introduce minor uncertainty in specific departments. Outcomes in the 56-64 range dominate probabilities because the system rewards established local networks over dramatic swings, with UC positioned to maintain its role in the majority without significant net change.
The 2026 French Senate election is scheduled for September 27, 2026, renewing série 2 — 178 of the Senate's 348 seats. The new senators are currently scheduled to take office on October 1, 2026, and the deadline for submitting new political-group membership lists and political declarations is currently set for October 5, 2026, at 4:00 PM CEST.
This market will resolve according to the number of French Senate seats held by the Groupe Union Centriste as of October 12, 2026, 4:00 PM CEST.
The seat count will be the group's total membership as published by the French Senate (senat.fr), counting members (membres), related (apparentés), and affiliated (rattachés).
A group will qualify as the Groupe Union Centriste if it satisfies at least one of the following:
- Its official name includes "Union Centriste" or a clear variant thereof;
- Its political declaration published in the Official Journal (Journal Officiel) of France identifies it as a continuation of the group; or
- It is publicly recognized as the continuation of the Groupe Union Centriste, and this characterization is confirmed by a consensus of credible reporting.
A group that changes its name will continue to qualify if it meets at least one of the criteria above. If the group merges with one or more other groups, this market will resolve according to the total membership of the merged group, provided the merged group meets at least one of the criteria above.
If no group qualifies, or group composition is not officially published, as of October 12, 2026, 4:00 PM CEST, this market will resolve to the lowest bracket.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
The administrative meeting of senators not appearing on the list of any group (RASNAG) will not qualify as a group for the purposes of this market.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
This market will resolve according to the number of French Senate seats held by the Groupe Union Centriste as of October 12, 2026, 4:00 PM CEST.
The seat count will be the group's total membership as published by the French Senate (senat.fr), counting members (membres), related (apparentés), and affiliated (rattachés).
A group will qualify as the Groupe Union Centriste if it satisfies at least one of the following:
- Its official name includes "Union Centriste" or a clear variant thereof;
- Its political declaration published in the Official Journal (Journal Officiel) of France identifies it as a continuation of the group; or
- It is publicly recognized as the continuation of the Groupe Union Centriste, and this characterization is confirmed by a consensus of credible reporting.
A group that changes its name will continue to qualify if it meets at least one of the criteria above. If the group merges with one or more other groups, this market will resolve according to the total membership of the merged group, provided the merged group meets at least one of the criteria above.
If no group qualifies, or group composition is not officially published, as of October 12, 2026, 4:00 PM CEST, this market will resolve to the lowest bracket.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
The administrative meeting of senators not appearing on the list of any group (RASNAG) will not qualify as a group for the purposes of this market.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
Market Opened: Aug 19, 2026, 3:52 PM ET
Volume
$5,007End Date
Oct 12, 2026Market Opened
Aug 19, 2026, 3:52 PM ETResolver
0x69c47De9D...The 2026 French Senate election is scheduled for September 27, 2026, renewing série 2 — 178 of the Senate's 348 seats. The new senators are currently scheduled to take office on October 1, 2026, and the deadline for submitting new political-group membership lists and political declarations is currently set for October 5, 2026, at 4:00 PM CEST.
This market will resolve according to the number of French Senate seats held by the Groupe Union Centriste as of October 12, 2026, 4:00 PM CEST.
The seat count will be the group's total membership as published by the French Senate (senat.fr), counting members (membres), related (apparentés), and affiliated (rattachés).
A group will qualify as the Groupe Union Centriste if it satisfies at least one of the following:
- Its official name includes "Union Centriste" or a clear variant thereof;
- Its political declaration published in the Official Journal (Journal Officiel) of France identifies it as a continuation of the group; or
- It is publicly recognized as the continuation of the Groupe Union Centriste, and this characterization is confirmed by a consensus of credible reporting.
A group that changes its name will continue to qualify if it meets at least one of the criteria above. If the group merges with one or more other groups, this market will resolve according to the total membership of the merged group, provided the merged group meets at least one of the criteria above.
If no group qualifies, or group composition is not officially published, as of October 12, 2026, 4:00 PM CEST, this market will resolve to the lowest bracket.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
The administrative meeting of senators not appearing on the list of any group (RASNAG) will not qualify as a group for the purposes of this market.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.**Union Centriste currently holds 59 seats in the French Senate, with 30 of them renewing on September 27, 2026.** Trader consensus around 59-61 seats reflects expectations of broad stability, as group president Hervé Marseille has emphasized that recent municipal gains (such as in Mulhouse and Cholet) should offset isolated losses in other departments. The indirect electoral college, composed of local officials, favors continuity for the centrist group amid a right-center local majority that supports the Senate's overall right-center dominance alongside Les Républicains.
No major national polling or late shifts have altered this outlook in recent weeks, though the Rassemblement National's push for its first Senate group and left-wing efforts to consolidate lists introduce minor uncertainty in specific departments. Outcomes in the 56-64 range dominate probabilities because the system rewards established local networks over dramatic swings, with UC positioned to maintain its role in the majority without significant net change.
The 2026 French Senate election is scheduled for September 27, 2026, renewing série 2 — 178 of the Senate's 348 seats. The new senators are currently scheduled to take office on October 1, 2026, and the deadline for submitting new political-group membership lists and political declarations is currently set for October 5, 2026, at 4:00 PM CEST.
This market will resolve according to the number of French Senate seats held by the Groupe Union Centriste as of October 12, 2026, 4:00 PM CEST.
The seat count will be the group's total membership as published by the French Senate (senat.fr), counting members (membres), related (apparentés), and affiliated (rattachés).
A group will qualify as the Groupe Union Centriste if it satisfies at least one of the following:
- Its official name includes "Union Centriste" or a clear variant thereof;
- Its political declaration published in the Official Journal (Journal Officiel) of France identifies it as a continuation of the group; or
- It is publicly recognized as the continuation of the Groupe Union Centriste, and this characterization is confirmed by a consensus of credible reporting.
A group that changes its name will continue to qualify if it meets at least one of the criteria above. If the group merges with one or more other groups, this market will resolve according to the total membership of the merged group, provided the merged group meets at least one of the criteria above.
If no group qualifies, or group composition is not officially published, as of October 12, 2026, 4:00 PM CEST, this market will resolve to the lowest bracket.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
The administrative meeting of senators not appearing on the list of any group (RASNAG) will not qualify as a group for the purposes of this market.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
This market will resolve according to the number of French Senate seats held by the Groupe Union Centriste as of October 12, 2026, 4:00 PM CEST.
The seat count will be the group's total membership as published by the French Senate (senat.fr), counting members (membres), related (apparentés), and affiliated (rattachés).
A group will qualify as the Groupe Union Centriste if it satisfies at least one of the following:
- Its official name includes "Union Centriste" or a clear variant thereof;
- Its political declaration published in the Official Journal (Journal Officiel) of France identifies it as a continuation of the group; or
- It is publicly recognized as the continuation of the Groupe Union Centriste, and this characterization is confirmed by a consensus of credible reporting.
A group that changes its name will continue to qualify if it meets at least one of the criteria above. If the group merges with one or more other groups, this market will resolve according to the total membership of the merged group, provided the merged group meets at least one of the criteria above.
If no group qualifies, or group composition is not officially published, as of October 12, 2026, 4:00 PM CEST, this market will resolve to the lowest bracket.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
The administrative meeting of senators not appearing on the list of any group (RASNAG) will not qualify as a group for the purposes of this market.
The resolution source for this market will be publications of the French Senate (senat.fr) and the Official Journal of France, and a consensus of credible reporting.
Volume
$5,007End Date
Oct 12, 2026Market Opened
Aug 19, 2026, 3:52 PM ETResolver
0x69c47De9D...**Union Centriste currently holds 59 seats in the French Senate, with 30 of them renewing on September 27, 2026.** Trader consensus around 59-61 seats reflects expectations of broad stability, as group president Hervé Marseille has emphasized that recent municipal gains (such as in Mulhouse and Cholet) should offset isolated losses in other departments. The indirect electoral college, composed of local officials, favors continuity for the centrist group amid a right-center local majority that supports the Senate's overall right-center dominance alongside Les Républicains. No major national polling or late shifts have altered this outlook in recent weeks, though the Rassemblement National's push for its first Senate group and left-wing efforts to consolidate lists introduce minor uncertainty in specific departments. Outcomes in the 56-64 range dominate probabilities because the system rewards established local networks over dramatic swings, with UC positioned to maintain its role in the majority without significant net change.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions