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ClosedLast odds shown below are frozen at close (Sep 18, 2026). Future questions tracked on /odds.
Winner-take-all answer·7 source contracts·Kalshi 7·closed just now·Closes Nov 3, 2026 · 46d

Will Barack Obama endorse Graham Platner in Maine Senate before Nov 3, 2026

Leader sits at 83% across 7 bound outcomes, runner-up at 63%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.

Leader probability

83%

Jon Ossoff

runner-up 63¢leader 83¢

Outcomes

7

winner-take-all

Runner-up

63¢

Mary Peltola

Spread

20pp

contested

24h volume

$0

thin orderbook

Closes

Nov 3, 2026

46 days

Venue

Kalshi

7 bound

30-day trend

0%50%100%-30d-3w-2w-1wtodayJon Ossoff: 83% (19 days, 18 points)Jon Ossoff: 83% on 2026-09-12Mary Peltola: 63% (19 days, 19 points)Mary Peltola: 63% on 2026-09-12Roy Cooper: 39% (19 days, 19 points)Roy Cooper: 39% on 2026-09-12
Jon Ossoff83¢Mary Peltola63¢Roy Cooper39¢
Top 3 candidates by current price · 19d

Bracket family

How the bracket ladder is priced.

Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.

Analysis

This probability reflects market expectations that Barack Obama will endorse Graham Platner in the Maine Senate race before Election Day on November 3, 2026. The 83% price indicates high confidence in such an endorsement occurring. Key drivers include Obama's historical pattern of selective endorsements in competitive Senate races, his relationship with Maine's Democratic establishment, and the timing of when Democratic primary contests conclude. The main uncertainty centers on whether Obama views the Maine race as sufficiently competitive or strategically important to warrant a public endorsement. The resolution will depend on Obama's stated public positions and any official endorsement announcements between now and Election Day. High-profile Democratic endorsements typically cluster in the final weeks before general elections or during primary contests when races tighten.

  • Obama's recent endorsement activity in other 2026 races, particularly whether he has already committed to endorsing Jon Ossoff in Georgia (priced at 83%) or other candidates
  • The competitiveness of the Maine Senate race and whether it reaches polling thresholds that historically trigger Obama's involvement in Senate endorsements
  • The timing of Maine's election cycle and primary calendar relative to when Obama typically makes endorsement announcements
  • Whether Graham Platner is the Democratic nominee and has secured Democratic Party establishment support before potential endorsement opportunities arise
  • Public statements or reported discussions from Obama's team or Maine Democratic leadership regarding endorsement strategy for the 2026 cycle

Recently closed in election 2026

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

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