Recount rules and margin trigger markets
A guide to recount-related event contracts: how automatic and requested recounts work, why rules vary by state, and how recounts interact with certification. · 4 min read
Updated 13 Oct 2026
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Recount rules and margin trigger markets
Close elections bring a specific set of markets: will a recount happen, will a recount change the outcome, and when will the result be certified. These contracts depend heavily on election law, which varies by jurisdiction. This guide explains the key concepts and the common reading mistakes.
Automatic vs requested recounts
In the United States, recount rules are set by states. Broadly, there are two types:
- Automatic recounts begin when the margin between candidates falls within a statutory threshold. Thresholds are commonly expressed as a fraction of a percentage point of votes cast, and some states have separate thresholds for machine and hand recounts.
- Requested recounts are initiated by a candidate, party, or voters. Some states only allow requests within a certain margin, some require the requester to pay unless the result changes, and deadlines are often short.
Outside the US, recount procedures differ again — for example, UK constituency counts can be recounted on the night at the returning officer's discretion. Always read the specific law the market references rather than assuming a general rule.
The margin that matters
Election-night margins are not final. Mail ballots, provisional ballots, and canvass corrections shift totals for days or weeks. A market asking whether a race will go to an automatic recount is really asking where the certified margin will land relative to the threshold. Our guide to certification and canvass markets explains the post-election process.
Recounts rarely flip outcomes
Studies of US statewide recounts have found that margin shifts are typically small — often a few hundred votes — and reversals are rare. That base rate matters. A market pricing a high chance that a recount overturns a lead of several thousand votes is pricing something history suggests is unusual. Read base rates and reference classes before reacting to narratives.
Very small margins are different. When a race is separated by a few dozen votes, recounts and ballot challenges can genuinely matter.
Media calls vs certified results
Decision desks may call a race before a recount, or decline to call it until one finishes. Contracts may settle on media calls, on certification, or on an official declaration. The difference determines when you get paid and what happens if a recount reverses a call. See election-night race calls and provisional vs final resolution.
Legal challenges are separate
A recount re-tabulates ballots. A legal contest challenges the validity of ballots or procedures in court. Some markets bundle these, others do not. If a market asks whether the result changes "after a recount," a court ruling that changes the result may not count.
Timing
Recounts push back certification. By-date contracts on certification can be affected, and capital locked in an unresolved contract has an opportunity cost — see our settlement timing guide.
A worked example
A statewide race ends with a 0.3% margin. The state's automatic recount threshold is 0.5%. A market on whether a recount occurs trades at 85 cents (illustrative — verify live). The remaining uncertainty is whether late canvass adjustments widen the margin past the threshold, or whether the trailing candidate waives the recount where the law allows. A reader checks whether waivers are allowed under that state's law before deciding whether 85% looks high or low.
Before you act on a price
- Read the full title and rules, including the named settlement source, the threshold, and the time zone.
- Convert the Yes and No prices to implied probabilities with the implied probability tool and note the gap between them.
- Account for fees and spread — the fee drag tool uses assumptions only, so verify the live schedule on the venue.
- Write your own probability range and the evidence behind it before comparing it with the crowd.
- Check related and near-duplicate markets for consistency; prices on this page are illustrative — verify live cents on the operator.
The bottom line
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FAQ
- What triggers an automatic recount?
- In some US states, an automatic recount is triggered when the margin falls within a set threshold, often around half a percentage point. Rules vary by state.
- Can a candidate request a recount?
- In many states, yes, sometimes only within a margin limit and sometimes at the requester's cost. Check the state's election law.
- Do recounts usually change results?
- Historically, statewide recounts have shifted margins by small amounts and have rarely reversed the outcome.
- How does a recount affect market settlement?
- It can delay certification, so contracts tied to certified results may settle later than ones tied to media calls.