Will the party holding the most seats win the next Brazil Senate election by 2026? [ resolves 2026-10-04 (123D) ]
Will Partido Liberal (PL) hold the most seats as a result of the next Brazilian Senate election?
polymarket: [B] multiple sources, tie-break·objective outcome methodology ›
distribution · by resolution date
polymarket 39 markets
| market | resolves | P(YES) | vol (24h) | vol (cum) | RCG | venue id | ||
|---|---|---|---|---|---|---|---|---|
| Will Partido Liberal (PL) hold the most seats as a result of the next Brazilian… | 2026-10-04 | 78.0% | — | $3.1K | B | 0x3e2cae…eb87 | ||
| Will Progressistas (PP) hold the most seats as a result of the next Brazilian… | 2026-10-04 | 5.8% | — | $588 | B | 0x0fd58b…da59 | ||
| Will Partido dos Trabalhadores (PT) hold the most seats as a result of the next… | 2026-10-04 | 2.4% | — | $844 | B | 0x97f38d…639f | ||
| Will Partido Social Democrático (PSD) hold the most seats as a result of the… | 2026-10-04 | 1.9% | — | $847 | B | 0x8da59d…3d22 | ||
| Will Partido Democrático Trabalhista (PDT) hold the most seats as a result of… | 2026-10-04 | 1.8% | — | $4.1K | B | 0x8b77c0…1947 | ||
| Will Movimento Democrático Brasileiro (MDB) hold the most seats as a result of… | 2026-10-04 | 1.0% | — | $696 | B | 0xd35fd2…e0e0 | ||
| Will Republicanos (REPUBLICANOS) hold the most seats as a result of the next… | 2026-10-04 | 1.0% | — | $618 | B | 0x4e7c61…98b6 | ||
| Will União Brasil (UNIÃO) hold the most seats as a result of the next Brazilian… | 2026-10-04 | 0.9% | — | $606 | B | 0x8e0b4c…ee5f | ||
| Will Podemos (PODEMOS) hold the most seats as a result of the next Brazilian… | 2026-10-04 | 0.9% | — | $838 | B | 0xa88f15…6646 | ||
| Will Partido da Social Democracia Brasileira (PSDB) hold the most seats as a… | 2026-10-04 | 0.9% | — | $800 | B | 0xc8c5e8…3b53 | ||
| Will Partido Novo (NOVO) hold the most seats as a result of the next Brazilian… | 2026-10-04 | 0.8% | — | $581 | B | 0x3e19c8…88b7 | ||
| Will Partido Socialista Brasileiro (PSB) hold the most seats as a result of the… | 2026-10-04 | 0.8% | — | $606 | B | 0x6673f9…5955 | ||
| Will Party A (A) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x9c0474…f614 | ||
| Will Party C (C) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x8a9085…1422 | ||
| Will Party G (G) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x45c8d0…8b7d | ||
| Will Party O (O) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0xe07d7e…1baf | ||
| Will Party P (P) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x258195…b82b | ||
| Will Party S (S) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0xa4daa2…9d6b | ||
| Will Party X (X) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x55a08b…3ad5 | ||
| Will Party Y (Y) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x27ecaf…f480 | ||
| Will Party E (E) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x470dff…903a | ||
| Will Party K (K) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x27a0da…f308 | ||
| Will Party M (M) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0xf9a30a…5bdc | ||
| Will Party D (D) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0xa5719f…bc94 | ||
| Will Party J (J) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x2aeb1b…0ec2 | ||
| Will Party L (L) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x725e4b…1145 | ||
| Will Party Q (Q) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0xde2b3e…9f7d | ||
| Will Party T (T) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x25b7ad…af42 | ||
| Will Party U (U) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x5aa852…6896 | ||
| Will Party W (W) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x13001d…7ca6 | ||
| Will Party Z (Z) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x76f489…4950 | ||
| Will another party hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x93993d…8ba3 | ||
| Will Party B (B) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x2db981…8065 | ||
| Will Party F (F) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x90ef71…9e91 | ||
| Will Party H (H) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x955922…c951 | ||
| Will Party I (I) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x9c946e…4f50 | ||
| Will Party N (N) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0xead082…3602 | ||
| Will Party R (R) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0xdcaefd…c09f | ||
| Will Party V (V) hold the most seats as a result of the next Brazilian Senate… | 2026-10-04 | 0.0% | — | — | B | 0x556412…0ccb |
resolution architecture
| venue | proposer | source | citation | arbitration | class | analyst notes |
|---|---|---|---|---|---|---|
| polymarket | Whitelisted Proposers | uncommitted | link | Optimistic Oracle (UMA) | Other | — |
verbatim rules
polymarket
The next federal Senate election is scheduled to take place in Brazil on October 4, 2026, in which two-thirds of the Senate’s 81 seats will be contested.
This market will resolve according to the political party that holds the greatest number of seats in the next Brazilian Senate as a result of the next Brazilian Senate election.
All seats, not only the ones contested in the next Brazilian Senate election, will be considered.
In the event of a tie between multiple parties for the most seats held, this market will resolve in favor of the party whose listed abbreviation appears first in alphabetical order.
This market's resolution will be based solely on the number of seats held by the named party in the Brazilian Senate as a result of the next Brazilian Senate election, not by any federation or coalition it may be a part of.
If the result of this election isn't known definitively by June 30, 2027, 11:59 PM ET, the market will resolve to "Other".
This market will resolve based on the result of the election, as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the Brazilian government, specifically the Superior Electoral Court (Tribunal Superior Eleitoral, TSE) (e.g., www.tse.jus.br/eleicoes/resultados-eleicoes) or the Brazilian Senate (https://www25.senado.leg.br/web/senadores/em-exercicio/-/e/por-partido).
platform source field
polymarket.description → https://www25.senado.leg.br/web/senadores/em-exercicio/-/e/por-partido recent wire items
monitoring status: active no active wire
No CM Signal wire has been published for this event yet.
CM Signal’s news-cycle scan surfaces the day’s top stories alongside the prediction markets pricing them. When a story references this event, its wire is published here and links back to this page.
programmatic access · four surfaces, same payload
AI grounded search reads embedded JSON-LD in HTML. Developers query REST. Agentic AI clients (Claude Desktop, Cursor) call MCP tools. AI crawlers index via /llms.txt. Same canonical record at every surface.
| HTML | browsers, AI grounded search, crawlers (embedded JSON-LD @type: Dataset) | https://clearmarket.fyi/events/next-brazil-senate-election-most-seats-held/ |
| JSON | REST API for developers | https://api.clearmarket.fyi/v1/events/next-brazil-senate-election-most-seats-held.json |
| MCP | agentic AI tool call (Claude Desktop, Cursor, Continue) | clearmarket.get_event("next-brazil-senate-election-most-seats-held") |
| AGENT | AI crawler discovery index | /llms.txt |
Snapshot 2026-06-03. Venue data via Kalshi + Polymarket APIs. Editorial fields (tags, editorial_notes) are ClearMarket-drafted with AI assistance under editorial review. Derived fields (venues_covered, resolution_clarity_grade, rcg_score) computed at serve time. Full per-field map in the JSON record under field_provenance.
raw JSON record · same payload returned by REST endpoint {
"event_id": "CM-EVT-LHQHV6D330",
"slug": "next-brazil-senate-election-most-seats-held",
"question": "Will the party holding the most seats win the next Brazil Senate election by 2026?",
"category": "politics",
"tags": [
"politics",
"elections",
"brazil",
"senate",
"2026",
"partisan-control"
],
"venues_covered": [
"polymarket"
],
"market_count": 39,
"cumulative_volume_usd": 14181,
"resolution_clarity_grade": "B",
"rcg_score": 85,
"rcg_caps": [
"uncommitted_illustrative"
],
"resolution_source": null,
"resolution_source_url": "https://www25.senado.leg.br/web/senadores/em-exercicio/-/e/por-partido",
"arbitration_model": "uma_oracle",
"proposer_model": "managed_whitelist",
"field_provenance": {
"question": {
"source": "clearmarket_editorial"
},
"tags": {
"source": "clearmarket_editorial",
"ai_drafted": true
},
"resolution_clarity_grade": {
"source": "derived",
"method": "rcg_v2_7factor"
},
"venues_covered": {
"source": "derived"
}
}
}