Will Jon Ossoff announce a run for President of the United States before Oct 1, 2027
Leader sits at 50% across 4 bound outcomes, runner-up at 31%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.
Leader probability
Before Oct 1, 2027
Outcomes
4
winner-take-all
Runner-up
31¢
Before Jul 1, 2027
Spread
19pp
contested
24h volume
$51
thin orderbook
Closes
Oct 1, 2027
391 days
Venue
Kalshi
4 bound
30-day trend
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.
Cluster 1
Will Jon Ossoff announce a run for President of the United States before
Will Jon Ossoff announce a run for President of the United States before Jan 1, 2027?: Before Jan 1, 2027
KXOSSOFFRUN-28-27JAN01
Will Jon Ossoff announce a run for President of the United States before Oct 1, 2027?: Before Oct 1, 2027
KXOSSOFFRUN-28-27OCT01
Will Jon Ossoff announce a run for President of the United States before Jul 1, 2027?: Before Jul 1, 2027
KXOSSOFFRUN-28-27JUL01
Will Jon Ossoff announce a run for President of the United States before Apr 1, 2027?: Before Apr 1, 2027
KXOSSOFFRUN-28-27APR01
Analysis
Markets are pricing a 42% probability that Senator Jon Ossoff announces a presidential campaign before October 1, 2027. Ossoff has not publicly expressed interest in a 2028 presidential run and faces significant structural headwinds: his focus on Senate duties, limited national profile outside Georgia, and the difficulty of mounting a viable campaign against established contenders. The probability could rise if he signals ambitions through rhetoric, endorsements, or organizational steps; it could fall if he explicitly distances himself from a White House bid or commits to Senate races. The most important catalyst will be whether any candidate announcements occur between now and the deadline, as early movers typically shape the viability calculus for remaining potential candidates.
- ›Ossoff has made no public statements indicating presidential ambitions as of mid-2026, and has focused on Senate committee work and Georgia-specific priorities
- ›The next concrete signal would be organizational moves (hiring senior staff, travel patterns, fundraising positioning) that precede formal announcements
- ›Timebound resolution: announcements typically cluster after midterm elections when candidates test viability; most 2028 contenders will likely declare between late 2026 and spring 2027
- ›Structural constraint: Ossoff represents a single state and lacks the national committee network or executive experience typically preceding top-tier presidential bids
- ›Calendar pressure: the 15-month window to October 2027 is relatively short—most viable candidates announce 18-24 months before the general election
What moved the line
- Aug 31Before Jul 1, 2027↑4pp27→31¢ · Kalshi
- Sep 3Before Jul 1, 2027↑4pp30→34¢ · Kalshi
- Sep 4Before Jul 1, 2027↓3pp34→31¢ · 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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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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