Republican Presidential Nominee 2028

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Active sub-markets

Market context

The Republican Party will select its 2028 presidential nominee at its national convention, scheduled for mid-July 2028. This market resolves affirmatively only if the specified individual secures and formally accepts the party's nomination, regardless of their performance in the subsequent general election or any mid-campaign replacement. The 2% implied probability reflects either a candidate with minimal current standing in primary polling or one facing significant structural barriers to nomination.

Historical precedent suggests outsider or non-traditional candidates have occasionally secured Republican nominations when establishment consensus fractured—most notably Donald Trump in 2016, who polled at single digits eighteen months before the convention. Conversely, frontrunners with commanding leads in Iowa and New Hampshire have consistently converted those advantages into nomination victories. The 2024 cycle demonstrated the party's capacity to consolidate rapidly around a single candidate once early contests produced clear signals. A 2% probability typically indicates either a candidate polling below 1% nationally or one facing explicit party opposition, making historical comparison difficult without knowing the specific nominee in question.

Traders should monitor Iowa caucuses (January 2028), New Hampshire primary (February), and Super Tuesday results (March) as primary catalysts. Convention delegate allocation rules, which vary significantly by state, will determine whether a frontrunner can accumulate the required majority before July. Any significant health events, legal developments, or major endorsement shifts from party leadership could rapidly shift probabilities. The Republican National Committee's formal nomination procedures and any rules changes adopted at the 2024 convention will govern the mechanics of acceptance and settlement determination.

Methodology

This page reviews Republican Presidential Nominee 2028 across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Legal UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Legal UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Legal UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legal UK triggers a quick verification flow that finishes in minutes.