27% — Will Janet Mills endorse Graham Platner in the Maine Senate race before May 15, 2026
Leader: Before Nov 3, 2026 at 27% · Kalshi 27% · 2 contracts · $2 volume · low confidence
Updated 2026-06-26 09:43:09 UTC

Tracks the leading outcome in a winner-take-all prediction market set with 2 outcomes.

Why this matters:
This market assesses the likelihood that Maine Governor Janet Mills will endorse Graham Platner in the 2026 U.S. Senate race before November 3, 2026. Currently priced at 36%, the probability reflects uncertainty about whether Mills will publicly back Platner during the general election campaign. The timing ladder suggests market participants view an endorsement as more likely later in the cycle—closer to the general election—rather than immediately, with near-term probabilities substantially lower. Key drivers include Mills's historical relationship with Platner, the Democratic primary outcome (if applicable), and broader state party dynamics. The main catalyst will be direct statements from Mills or her office, with resolution occurring either upon a public endorsement or the November election passing without one.

Key factors:
- Mills's prior working relationship with Platner and her previous public comments about him
- The outcome and timing of Maine's Democratic primary process and whether Platner emerges as the party-endorsed nominee
- Competitive positioning of the general election race and whether Mills views an endorsement as strategically beneficial
- Historical patterns of Maine gubernatorial endorsements in Senate races and typical timing of such announcements
- Any public statements or reported private signals from Mills's office about her intention to endorse in this race

Contracts:
- Will Janet Mills endorse Graham Platner in the Maine Senate race before Nov 3, 2026?: Before Nov 3, 2026 — 27¢ Kalshi $2 (weight 100%)
- Will Janet Mills endorse Graham Platner in the Maine Senate race before Aug 1, 2026?: Before Aug 1, 2026 — 11¢ Kalshi $0 (weight 0%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-06-26T09:20:49.306Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "27% per prediction markets (SimpleFunctions, June 2026)"
Canonical: https://simplefunctions.dev/answer/millsplatner
Full data: https://simplefunctions.dev/api/public/query?q=Will%20Janet%20Mills%20endorse%20Graham%20Platner%20in%20the%20Maine%20Senate%20race%20before%20May%2015%2C%202026
Provider: SimpleFunctions — https://simplefunctions.dev