SimpleFunctions
Winner-take-all answer·12 source contracts·Kalshi 12·refreshed just now·Closes Nov 3, 2027 · 408d

Will Proposition 38 pass

Leader sits at 79% across 12 bound outcomes, runner-up at 58%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.

Leader probability

79%

Proposition 1

runner-up 58¢leader 79¢

Outcomes

12

winner-take-all

Runner-up

58¢

Proposition 5

Spread

21pp

contested

24h volume

$0

thin orderbook

Closes

Nov 3, 2027

408 days

Venue

Kalshi

12 bound

30-day trend

0%50%100%-30d-3w-2w-1wtodayProposition 1: 79% (24 days, 21 points)Proposition 1: 79% on 2026-09-17Proposition 5: 58% (24 days, 24 points)Proposition 5: 58% on 2026-09-19Proposition 37: 49% (24 days, 22 points)Proposition 37: 49% on 2026-09-19
Proposition 179¢Proposition 558¢Proposition 3749¢
Top 3 candidates by current price · 24d

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

Proposition 38 is currently priced at 61 cents on prediction markets, indicating that traders assess a roughly 61% probability of passage. This reflects moderate confidence compared to other propositions in the same ballot measure set, where Proposition 2 leads at 73%. The pricing suggests meaningful uncertainty about whether the measure will clear the threshold needed for passage. Key drivers of the current probability likely include recent polling data, campaign funding levels, and demographic composition of likely voters. Resolution will occur on election day when official vote counts determine passage. Markets may adjust significantly if new polling emerges, major campaign developments occur, or turnout models shift based on early voting data.

  • Current Kalshi contract price of 61¢ represents substantially lower confidence than the leading proposition (73¢), suggesting relative weakness among this ballot measure
  • 24-hour trading volume of $39 on this contract is low compared to Proposition 45 ($741), indicating limited recent trader attention or consensus
  • Proposition 38's pricing sits between more popular measures (Prop 2 at 73¢, Prop 1 at 49¢), placing it in mid-tier likelihood within the same ballot cycle
  • Resolution depends on official election results; shifts would likely occur if new polling data releases or voter turnout models change materially before election day
  • The multi-outcome winner-take-all structure means this contract's value is directly contingent on the specific proposition passing, not relative performance

What moved the line

  • Sep 19Proposition 344pp6723¢ · Kalshi
  • Sep 17Proposition 433pp437¢ · Kalshi
  • Sep 19Proposition 4133pp363¢ · Kalshi
  • Sep 18Proposition 4326pp935¢ · Kalshi
  • Sep 19Proposition 4526pp4317¢ · Kalshi

Recently closed in general

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

More like this

Adjacent prediction questions.

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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