SimpleFunctions

Who will run for the Democratic presidential nomination in 2028

Jon Stewart is priced at 12¢ on Kalshi. Current book: 12¢ bid, 17¢ ask, 5¢ spread. This outcome ranks #15 of 16 inside Who will run for the Democratic presidential nomination in 2028.

Price history

12¢ current

7¢
10¢20¢
May 8, 2026Jun 3, 2026

Contract brief

If Jon Stewart announces a presidential campaign to contest the presidential nomination of the Democratic party for the 2028 U.S. presidential election before Jan 1, 2028, then the market resolves to Yes.

Outcome

Jon Stewart

Rank

#15 of 16

Leader

Gavin Newsom 85¢

Range

1¢-85¢

Family volume

$551

Identifier

KX2028DRUN-28-JSTE

Jun 7, 2026, 8:08 AM UTC · 20m ago

Implied probability

12¢
Latest venue quote
Jun 7, 2026, 8:08 AM UTC · 20m ago

Bid

12¢

Ask

17¢

Spread

24h volume

$4

Family rank

#15 of 16

16 outcomes · Who will run for the Democratic presidential nomination in 2028

Closes

Jan 1, 2028

Family volume

$551

Orderbook snapshot

12 / 17¢

Kalshi
5¢ spread
BidSize
12¢689
11¢124
10¢500
9¢1.0K
2¢50
AskSize
17¢8
18¢500
20¢1.3K
21¢499
40¢1

Contract terms

What resolves this market.

YES condition

If Jon Stewart announces a presidential campaign to contest the presidential nomination of the Democratic party for the 2028 U.S. presidential election before Jan 1, 2028, then the market resolves to Yes.

Venue

Kalshi

Closes

Jan 1, 2028

Identifier

KX2028DRUN-28-JSTE

SF Signal
SF Index
233.45
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

466.9%

IY (No)

8.7%

Adj IY

233%

CRI

7

Overround

13.4%

Regime

neutral

Score

0.5

Full indicator table

466.9%
8.7%
Adj IY
233%
7
Overround
13.4%

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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.