Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative UK) Pick polygram.ink (preferred broker) |
49% | 51% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
49% | 51% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Robert F. Kennedy Jr. | 49% |
| J.D. Vance | 43% |
| Marco Rubio | 27% |
| Ron DeSantis | 3% |
| Donald Trump | 2% |
| Tucker Carlson | 2% |
| Tulsi Gabbard | 1% |
| Glenn Youngkin | 1% |
| Donald Trump Jr. | 1% |
| Vivek Ramaswamy | 1% |
| Sarah Huckabee Sanders | 1% |
| Greg Abbott | 1% |
| Robert F. Kennedy Jr. | 1% |
| Brian Kemp | 1% |
| Byron Donalds | 1% |
| Ted Cruz | 1% |
| Elon Musk | 1% |
| Ivanka Trump | 1% |
| Rand Paul | 1% |
| Marjorie Taylor Greene | 1% |
| Thomas Massie | 1% |
| Nikki Haley | 0% |
| Elise Stefanik | 0% |
| Josh Hawley | 0% |
| Matt Gaetz | 0% |
| Katie Britt | 0% |
| John Thune | 0% |
| Kristi Noem | 0% |
| Mike Pence | 0% |
| Tom Brady | 0% |
| Steve Bannon | 0% |
| Erika Kirk | 0% |
| Kim Kardashian | 0% |
| Eric Trump | 0% |
| Joe Kent | 0% |
| Pete Hegseth | 0% |
| Candace Owens | 0% |
| Tim Scott | 0% |
| Mike Johnson | 0% |
| Doug Burgum | 0% |
| Tom Cotton | 0% |
| John N. Kennedy | 0% |
| Rick Scott | 0% |
| Person U | 0% |
| Person V | 0% |
| Person W | 0% |
| Person X | 0% |
| Person Y | 0% |
| Person Z | 0% |
| Person AA | 0% |
| Person AB | 0% |
| Person AC | 0% |
| Person AD | 0% |
| Person AE | 0% |
| Person AF | 0% |
| Person AG | 0% |
| Person AH | 0% |
| Person AI | 0% |
| Person AJ | 0% |
| Person AK | 0% |
| Person AL | 0% |
| Person AM | 0% |
| Person AN | 0% |
| Person AO | 0% |
| Person AP | 0% |
| Person AQ | 0% |
| Person AR | 0% |
| Person AS | 0% |
| Person AT | 0% |
| Person AU | 0% |
| Person AV | 0% |
| Person AW | 0% |
| Person AX | 0% |
| Person AY | 0% |
| Person AZ | 0% |
| Person BA | 0% |
| Person BB | 0% |
| Person BC | 0% |
| Person BD | 0% |
| Person BE | 0% |
| Person BF | 0% |
| Person BG | 0% |
| Person BH | 0% |
| Person BI | 0% |
| Person BJ | 0% |
| Person BK | 0% |
| Person BL | 0% |
| Person BM | 0% |
| Person BN | 0% |
| Person BO | 0% |
| Person BP | 0% |
| Person BQ | 0% |
| Person BR | 0% |
| Person BS | 0% |
| Person BT | 0% |
| Person BU | 0% |
| Person BV | 0% |
| Person BW | 0% |
| Person BX | 0% |
| Person BY | 0% |
| Person BZ | 0% |
| Person CA | 0% |
| Person CB | 0% |
| Person CC | 0% |
| Person CD | 0% |
| Person CE | 0% |
| Person CF | 0% |
| Person CG | 0% |
| Person CH | 0% |
| Person CI | 0% |
| Person CJ | 0% |
| Person CK | 0% |
| Person CL | 0% |
| Person CM | 0% |
| Person CN | 0% |
| Person CO | 0% |
| Person CP | 0% |
| Person CQ | 0% |
| Person CR | 0% |
| Person CS | 0% |
| Person CT | 0% |
| Person CU | 0% |
| Person CV | 0% |
| Person CW | 0% |
| Person CX | 0% |
| Person CY | 0% |
| Person CZ | 0% |
| Other | 0% |
Market context
The Republican Party will select its 2028 presidential nominee through a combination of primary elections, caucuses, and the national convention. Polymarket currently prices this particular candidate's nomination odds at 2%, reflecting either a long-shot candidacy or late entry into the race. The contract settles on 7 November 2028, after the general election, meaning the nominee must both win the party's formal nomination and accept it—a distinction that matters if circumstances force a replacement before polling day.
Historical precedent suggests 2% odds align with candidates who lack significant institutional support or early polling traction. In 2016, most Republican primary contenders began with similar or lower probabilities before consolidating support through Iowa and New Hampshire results. The 2012 cycle saw multiple candidates surge from single-digit recognition to serious contention within weeks. Conversely, nominees who fail to materialise often remain priced below 1% throughout the cycle, suggesting this market reflects genuine if modest viability rather than pure noise.
The critical catalysts ahead include formal campaign announcements, early state endorsements from party figures, and quarterly fundraising disclosures. The Iowa caucuses (scheduled for early 2024 in previous cycles, though 2028 dates remain fluid) historically reshape the field dramatically. Traders should monitor whether this candidate attracts major donor backing or grassroots momentum in early primary states. Recent reporting on Republican primary positioning will clarify whether this candidate maintains active campaign infrastructure or has effectively exited the race, either of which would justify material repricing before the settlement window closes.
Methodology
We track Republican Presidential Nominee 2028 across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
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?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Alternative UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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 does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- 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.
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