SimpleFunctions

Who will run for the Republican presidential nomination in 2028

Byron Donalds is priced at 24¢ on Kalshi. Current book: 16¢ bid, 18¢ ask, 2¢ spread. This outcome ranks #9 of 16 inside Who will run for the Republican presidential nomination in 2028.

Price history

24¢ current

+15¢
10¢20¢
May 22, 2026Jun 10, 2026

Contract brief

If Byron Donalds 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

Byron Donalds

Rank

#9 of 16

Leader

J.D. Vance 74¢

Range

2¢-74¢

Family volume

$4K

Identifier

KX2028RRUN-28-BDON

Jun 19, 2026, 8:38 AM UTC · 7m ago

Implied probability

24¢
Latest venue quote
Jun 19, 2026, 8:38 AM UTC · 7m ago

Bid

16¢

Ask

18¢

Spread

Reported volume

$307

Family rank

#9 of 16

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

Closes

Jan 1, 2028

Family volume

$4K

Orderbook snapshot

16 / 18¢

Kalshi
2¢ spread
BidSize
16¢500
15¢1.0K
3¢420
3¢241
3¢16
AskSize
18¢1
23¢100
24¢500
26¢1.0K
95¢40

Contract terms

What resolves this market.

YES condition

If Byron Donalds 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-BDON

SF Signal
SF Index
170.71
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

341.4%

IY (No)

12.4%

Adj IY

171%

CRI

5

Overround

7.7%

Regime

neutral

Score

0.409

Observability

medium

Event type

political

Full indicator table

341.4%
12.4%
Adj IY
171%
5
Overround
7.7%

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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.