The 2026 Senate map places 22 Republican-held seats and 13 Democratic seats before voters, creating defensive challenges for the GOP majority amid a national generic ballot that has shown a Democratic advantage in recent surveys. Retirement announcements in Michigan and Georgia, combined with competitive contests in North Carolina, Texas, and Iowa, have kept the range of likely outcomes narrow, with trader pricing reflecting expectations of Democratic net gains between zero and four seats. Primary developments, candidate fundraising, and shifting turnout patterns in swing states continue to influence assessments of whether Republicans will finish with 49–51 seats or see further erosion below that threshold.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato$2,297,410 Vol.
$2,297,410 Vol.
≤47
26%
48
10%
49
16%
50
19%
51
16%
52
6%
53
4%
54
2%
55
1%
56
1%
57+
4%
$2,297,410 Vol.
$2,297,410 Vol.
≤47
26%
48
10%
49
16%
50
19%
51
16%
52
6%
53
4%
54
2%
55
1%
56
1%
57+
4%
This market will resolve according to the number of seats held by the Republican Party in the US Senate as a result of the 2026 midterm elections.
This market will resolve based on the results of all Senate elections, including special elections, that are scheduled to occur in November 2026 as of October 31, 2026. If a required runoff for any such election could change the market’s outcome, the market will remain open until that runoff is conclusively called by this market’s resolution sources.
If a Senate seat is vacant but a corresponding election is not held in November 2026, the seat will be considered held by the party of the seat's most recent incumbent.
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 Senate elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democratic or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the Senate elections are conclusively called by this market's resolution sources.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called all Senate elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.
Mercato aperto: Dec 18, 2025, 8:55 PM ET
Resolver
0x2F5e3684c...This market will resolve according to the number of seats held by the Republican Party in the US Senate as a result of the 2026 midterm elections.
This market will resolve based on the results of all Senate elections, including special elections, that are scheduled to occur in November 2026 as of October 31, 2026. If a required runoff for any such election could change the market’s outcome, the market will remain open until that runoff is conclusively called by this market’s resolution sources.
If a Senate seat is vacant but a corresponding election is not held in November 2026, the seat will be considered held by the party of the seat's most recent incumbent.
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 Senate elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democratic or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the Senate elections are conclusively called by this market's resolution sources.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called all Senate elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.
Resolver
0x2F5e3684c...The 2026 Senate map places 22 Republican-held seats and 13 Democratic seats before voters, creating defensive challenges for the GOP majority amid a national generic ballot that has shown a Democratic advantage in recent surveys. Retirement announcements in Michigan and Georgia, combined with competitive contests in North Carolina, Texas, and Iowa, have kept the range of likely outcomes narrow, with trader pricing reflecting expectations of Democratic net gains between zero and four seats. Primary developments, candidate fundraising, and shifting turnout patterns in swing states continue to influence assessments of whether Republicans will finish with 49–51 seats or see further erosion below that threshold.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato
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