17% — Will Trump run in 2028?
Kalshi 17% · 5 contracts · $35 volume · medium confidence
Updated 2026-09-07 13:37:36 UTC

Why this matters:
Donald Trump is currently viewed as having low odds of announcing a 2028 presidential run, with markets pricing that event at 26% by November 2028. There is a 44% market-implied probability that Trump will endorse J.D. Vance for the 2028 election before March 1, 2028. Conversely, market participants assign only an 11% probability to Trump endorsing himself.

Key factors:
- 26% chance of Trump 2028 run announcement
- 44% chance of J.D. Vance endorsement
- Low 11% odds for Trump self-nomination
- Early political maneuvering

Contracts:
- Will Donald Trump announce a run for President of the United States before Jan 1, 2028?: Before 2028 — 16¢ Kalshi $20 (weight 58%)
- Who will run for the Republican presidential nomination in 2028?: Donald J. Trump — 13¢ Kalshi $15 (weight 42%)
- Will Donald Trump announce a run for President of the United States before Nov 7, 2028?: Before Election Day — 23¢ Kalshi $0 (weight 0%)
- Who will run for the Republican presidential nomination in 2028?: Donald J. Trump Jr. — 25¢ Kalshi $0 (weight 0%)
- Will a Trump family member the 2028 Republican presidential nominee?: Before 2028 — 7¢ Kalshi $0 (weight 0%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-09-07T13:20:52.636Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "17% per prediction markets (SimpleFunctions, September 2026)"
Canonical: https://simplefunctions.dev/answer/trump-2028
Full data: https://simplefunctions.dev/api/public/query?q=Will%20Trump%20run%20in%202028%3F
Provider: SimpleFunctions — https://simplefunctions.dev