Will drop out of the 2026 United States Senate election in Maine before Jul 9, 2026
Liquidity-weighted aggregate sits at 66% across 5 Kalshi contracts.
Implied probability
Kalshi
66%
5 contracts
Polymarket
—
not bound
Cross-venue gap
—
single venue
24h move
+9pp
18h ago
24h volume
$2.1M
5 contracts
Closes
Jul 14, 2026
6 days
30-day trend
Bracket families
2 clusters across 5 contracts.
These contracts were grouped by title similarity. The headline aggregate combines all clusters; verify the cluster you actually need before quoting a number.
Cluster 1
Will drop out of the 2026 United States Senate election in Maine before Jul
Will drop out of the 2026 United States Senate election in Maine before Jul 8, 2026?: Before Jul 8, 2026
KXPLATNERDROPOUT-26-JUL8
Will drop out of the 2026 United States Senate election in Maine before Jul 11, 2026?: Before Jul 11, 2026
KXPLATNERDROPOUT-26-JUL11
Will drop out of the 2026 United States Senate election in Maine before Jul 9, 2026?: Before Jul 9, 2026
KXPLATNERDROPOUT-26-JUL9
Will drop out of the 2026 United States Senate election in Maine before Jul 10, 2026?: Before Jul 10, 2026
KXPLATNERDROPOUT-26-JUL10
Cluster 2
Will Graham Platner drop out of the 2026 United States Senate election in Maine before Jul 14, 2026
Analysis
This probability indicates a 57% chance that Graham Platner, a candidate in Maine's 2026 Senate election, will withdraw from the race before July 9, 2026—approximately 48 hours from now. The high probability reflects near-term resolution, with contract prices showing elevated expectations of withdrawal on very specific dates. Factors driving this include recent campaign developments, polling performance, or candidate circumstances that have triggered speculation about an imminent exit. The market appears to price in substantial uncertainty compressed into days rather than weeks, suggesting either recent news or an anticipated announcement. The resolution hinges on whether Platner formally announces a dropout or files withdrawal paperwork before the July 9 deadline. After July 9, the market will simply resolve to either yes or no based on documented withdrawal status, eliminating the current speculation around the precise timing of his decision.
- ›Market prices for earlier deadlines (72¢ for Jul 9) suggest meaningful probability of withdrawal within 48 hours rather than speculation about eventual exit
- ›Contract pricing shows progressive increases for later deadlines (91¢ for Jul 14), indicating traders expect clarity by mid-July if not immediately
- ›High trading volume in the Jul 14 contract ($2.1M in 24h) indicates significant market attention to this specific candidate race
- ›If no withdrawal occurs by July 9, the market will immediately reprice based on new timeframe expectations
- ›Platner's current campaign status, recent statements, and any disclosed health, family, or personal circumstances directly determine whether withdrawal is imminent or speculative
What moved the line
- Jul 7Before Jul 14, 2026↑52pp39→91¢ · Kalshi
- Jul 6Before Jul 14, 2026↑36pp3→39¢ · Kalshi
- Jul 7Before Jul 8, 2026↑7pp39→46¢ · Kalshi
- Jul 7Before Jul 11, 2026↓4pp83→79¢ · Kalshi
- Jul 7Before Jul 10, 2026↓4pp77→73¢ · Kalshi
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These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.
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Related reading
Graham Platner Dominates Maine Senate Race Markets as Democrats' Best Hope
The Maine Senate race has become the most heavily traded individual election contract, with Graham Platner's dropout probability at just 8% (92¢ that he stays in). Democrats are slight favorites at 59¢, and the outcome is seen as a key battleground for Senate control (Republicans 57¢ to win the chamber).
Election 2026: Democrats Lead House Odds (81¢), Senate Tighter
Democrats are now heavy favorites to win the House (81¢) while Republicans hold the edge for Senate (59¢). 2028 nomination markets show J.D. Vance and Gavin Newsom as early frontrunners.
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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