Republican Presidential Nominee 2028

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Active sub-markets

Market context

The contract turns on whether the named Republican wins and accepts the party’s 2028 presidential nomination by the party’s official convention process. At a 2% crowd-implied probability, the market is pricing this as a long-shot outcome, consistent with the fact that the nomination is still more than two years away and the field is not yet set. Early 2028 nomination markets have generally been much more concentrated around a few national figures, with JD Vance, Marco Rubio and a small cluster of other well-known Republicans dominating attention on larger platforms, while this specific contract remains near the bottom of the board.

That low price should be read against past nomination cycles, where early favourites often shifted once primary campaigning began, endorsements moved and the party’s governing coalition became clearer. On Polymarket, the top Republican 2028 nominees have recently been priced in the high teens, with Vance leading and Rubio close behind, while YouGov’s latest polling found 65% of Republicans and Republican-leaning independents would at least consider Vance in a primary-style list. By contrast, sportsbook-style contracts on Kalshi and similar venues have tended to track a narrower nominee-specific question and may move differently if the named individual is not among the early consensus leaders.

Traders should watch for any formal announcement from the person named in the contract, changes to the Republican National Convention timetable, and any shift in party rules or delegate allocation. The key dependency is not just winning delegates, but formally accepting the nomination, which is what the settlement hinges on. Recent polling from YouGov and live pricing on Polymarket and Kalshi provide the clearest comparison set for whether this 2% line is merely a speculative tail outcome or starts to move with campaign developments.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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 PolyGram, 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?

PolyGram 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.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.