Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
19% | 81% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
19% | 81% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Gavin Newsom | 19% |
| Jon Ossoff | 15% |
| Alexandria Ocasio-Cortez | 14% |
| Kamala Harris | 9% |
| Pete Buttigieg | 5% |
| Josh Shapiro | 5% |
| Andy Beshear | 3% |
| Mark Kelly | 3% |
| Rahm Emanuel | 2% |
| Jon Stewart | 2% |
| Ro Khanna | 2% |
| Wes Moore | 1% |
| Gretchen Whitmer | 1% |
| Mark Cuban | 1% |
| J.B. Pritzker | 1% |
| Raphael Warnock | 1% |
| Cory Booker | 1% |
| Michelle Obama | 1% |
| Roy Cooper | 1% |
| Bernie Sanders | 1% |
| Hunter Biden | 1% |
| Chelsea Clinton | 1% |
| Dwayne 'The Rock' Johnson | 1% |
| Chris Murphy | 1% |
| James Talarico | 1% |
| Stephen A. Smith | 0% |
| Tim Walz | 0% |
| Gina Raimondo | 0% |
| Zohran Mamdani | 0% |
| John Fetterman | 0% |
| Jared Polis | 0% |
| Barack Obama | 0% |
| Hillary Clinton | 0% |
| Liz Cheney | 0% |
| Phil Murphy | 0% |
| LeBron James | 0% |
| George Clooney | 0% |
| MrBeast | 0% |
| Oprah Winfrey | 0% |
| Andrew Yang | 0% |
| Beto O’Rourke | 0% |
| Kim Kardashian | 0% |
| Jasmine Crockett | 0% |
| Ruben Gallego | 0% |
| Graham Platner | 0% |
| Abigail Spanberger | 0% |
| Hakeem Jeffries | 0% |
| Elissa Slotkin | 0% |
| Adam Schiff | 0% |
| Josh Stein | 0% |
| Alex Padilla | 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% |
| Other | 0% |
Market context
The 2028 Democratic presidential nomination is still an open race, with the contract pricing a named candidate at **19%** and leaving the balance to the field or other contenders. That sits broadly in line with other prediction venues, where Gavin Newsom is usually the frontrunner at roughly the mid-20s to low-30s, while Jon Ossoff, Alexandria Ocasio-Cortez, Kamala Harris and Josh Shapiro trade in a much lower band.[2][5][7][8]
The historical read is that a sub-20% price this far out is consistent with a fragmented primary rather than a settled contest. Comparable early-cycle nomination markets usually reflect name recognition, donor networks and perceived general-election strength more than firm campaign structure; recent commentary has also described this race as “wide open” despite Newsom’s lead.[3][6][12] The current price therefore implies a meaningful chance of the market becoming more concentrated later, rather than a strong consensus on any single nominee.[1][4]
For traders, the main catalysts are likely to be early positioning rather than formal nomination events: public exploratory moves, fundraising signals, endorsements, and any schedule changes that clarify who is building a national organisation. Coverage in July 2026 has already noted Jon Ossoff narrowing the gap in prediction markets, which suggests that state-level and media momentum can shift pricing before any official campaign launch.[10][11] Super Tuesday on 7 March 2028 will matter for the underlying contest, but in contract terms the sharper moves are more likely to come from candidate decisions and intra-party alignment well before then.[9]
Methodology
This page reviews Democratic Presidential Nominee 2028 across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.
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
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- 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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