Republican Presidential Nominee 2028

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Active sub-markets

Market context

The Republican Party will select its 2028 presidential nominee at the party convention in summer 2028, following state primaries and caucuses. This market resolves affirmatively only if the specified individual secures and formally accepts the Republican nomination, regardless of their performance in the subsequent general election or any mid-campaign replacement scenarios.

Historical precedent suggests that frontrunners in the year preceding a nomination cycle rarely face serious primary challengers from within their own party, though the 2016 and 2020 cycles demonstrated volatility in candidate viability. A 3% probability reflects substantial scepticism about this particular nominee's pathway through the primary process. Comparable markets on alternative Republican nominees typically command higher aggregate probability mass, indicating the crowd views multiple candidates as more plausible standard-bearers. The 2024 cycle saw Donald Trump secure the nomination despite legal challenges and primary opposition, establishing that legal or reputational headwinds do not necessarily prevent nomination success.

Key catalysts include Iowa caucuses (January 2028), Super Tuesday results (March 2028), and any major announcements regarding candidate health, legal proceedings, or campaign funding. Recent reporting from Reuters and AP News has tracked early polling in early-voting states, though these surveys remain volatile more than three years before the convention. Traders should monitor Federal Election Commission filings for campaign spending patterns and state-level primary scheduling changes. Liquidity on this market depends on deposit accessibility; SEPA transfers and USDC on-ramps reduce friction for European traders, whilst Klarna integration enables faster capital deployment during high-volatility news windows around primary elections.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Deposit 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 Deposit 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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.