SimpleFunctions

Who will run for the Republican presidential nomination in 2028

Thomas Massie is priced at 40¢ on Kalshi. Current book: 40¢ bid, 43¢ ask, 3¢ spread. This outcome ranks #4 of 16 inside Who will run for the Republican presidential nomination in 2028.

Price history

40¢ current

35¢40¢45¢
Jun 21, 2026Jul 19, 2026

Contract brief

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

Outcome

Thomas Massie

Rank

#4 of 16

Leader

J.D. Vance 77¢

Range

2¢-77¢

Family volume

$409

Identifier

KX2028RRUN-28-TMAS

Jul 21, 2026, 11:08 AM UTC · 18m ago

Implied probability

40¢
Latest venue quote
Jul 21, 2026, 11:08 AM UTC · 18m ago

Bid

40¢

Ask

43¢

Spread

Reported volume

$12K

Family rank

#4 of 16

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

Closes

Jan 1, 2028

Family volume

$409

Orderbook snapshot

40 / 43¢

Kalshi
3¢ spread
BidSize
40¢501
39¢1.0K
32¢7
31¢16
AskSize
43¢500
44¢1
45¢1.0K
65¢10
66¢6

Contract terms

What resolves this market.

YES condition

If Thomas Massie announces a presidential campaign to contest the presidential nomination of the Republican 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

KX2028RRUN-28-TMAS

SF Signal
SF Index
51.73
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

103.5%

IY (No)

46.0%

Adj IY

52%

CRI

2

Overround

7.8%

Regime

neutral

Score

0.409

Observability

medium

Event type

political

Full indicator table

103.5%
46.0%
Adj IY
52%
2
Overround
7.8%

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SimpleFunctions context

Index, screen, query, and monitor.

Open index

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.