Will a Republican win the Massachusetts Senate seat in the next election? [ resolves — ]
Will the Democrats win the Massachusetts Senate race in 2026?
polymarket: [B] multiple sources, tie-break·objective outcome methodology ›
distribution · by resolution date
polymarket 13 markets
| market | resolves | P(YES) | vol (24h) | vol (cum) | RCG | venue id | ||
|---|---|---|---|---|---|---|---|---|
| Will the Democrats win the Massachusetts Senate race in 2026 | — | 95.0% | — | $8.4K | B | 0x6f56cd…1632 | ||
| Will the Republicans win the Massachusetts Senate race in 2026 | — | 4.0% | — | $4.6K | B | 0xc07048…2766 | ||
| Will Person A win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x95a201…e67d | ||
| Will Person C win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x4ed5c8…8575 | ||
| Will Person E win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x0f2dc7…168f | ||
| Will Person G win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0xe40d30…4da9 | ||
| Will Person I win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x1d0fb6…7aae | ||
| Will a candidate not listed above win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x39e4db…09dc | ||
| Will Person B win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0xd5d50d…66f8 | ||
| Will Person D win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x757c7c…10c8 | ||
| Will Person F win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x1c58b4…43e3 | ||
| Will Person H win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0x9570d7…0875 | ||
| Will Person J win the Massachusetts Senate race in 2026 | — | 0.0% | — | — | B | 0xc4e8db…09c0 |
resolution architecture
| venue | proposer | source | citation | arbitration | class | analyst notes |
|---|---|---|---|---|---|---|
| polymarket | Whitelisted Proposers | Associated Press | not provided | Optimistic Oracle (UMA) | Other | — |
verbatim rules
polymarket
This market will resolve according to the winner of the 2026 midterm Massachusetts U.S. Senate election, inclusive of any run-offs.
A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
platform source field
polymarket.resolution_source → "Associated Press" 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/massachusetts-senate-election-winner/ |
| JSON | REST API for developers | https://api.clearmarket.fyi/v1/events/massachusetts-senate-election-winner.json |
| MCP | agentic AI tool call (Claude Desktop, Cursor, Continue) | clearmarket.get_event("massachusetts-senate-election-winner") |
| 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-D0T3BF05P9",
"slug": "massachusetts-senate-election-winner",
"question": "Will a Republican win the Massachusetts Senate seat in the next election?",
"category": "politics",
"tags": [
"politics",
"elections",
"massachusetts",
"us-senate",
"2026-election",
"partisan-outcome"
],
"venues_covered": [
"polymarket"
],
"market_count": 13,
"cumulative_volume_usd": 12993,
"resolution_clarity_grade": "B",
"rcg_score": 76,
"rcg_caps": [],
"resolution_source": "Associated Press",
"resolution_source_url": null,
"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"
}
}
}