NY-13 Democratic Primary Winner

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Active sub-markets

Market context

The Democratic nominee for New York’s 13th congressional district will be chosen in the June 23 primary, with the market currently treating Adriano Espaillat and Darializa Avila Chevalier as the only meaningful contenders. Polymarket is tighter than a simple incumbent-versus-challenger story might suggest: it shows Avila Chevalier around 53% to 56.5% and Espaillat around 44.5% to 48%, which is a narrow edge rather than a decisive lead.[1] That sits well above a conventional “safe incumbent” read, so the current 63% YES implies a modest market belief that the nominal favourite in the contract will indeed be the primary winner, but not by a wide margin.[1][5]

The best historical frame is that NY-13 has become a genuinely competitive Democratic contest despite Espaillat’s five-term incumbency, which is why the race is being watched more like a live upset risk than a routine primary.[2][5] Ballotpedia lists Espaillat, Avila Chevalier, Theo Chino-Tavarez and Oscar Romero on the ballot, but the market data suggest traders see the contest as concentrated between the incumbent and his main challenger.[2] In comparable local primaries, late shifts often come from turnout operations, union or club endorsements, and whether undecided voters break towards name recognition or change messaging; that is the lens through which a 63% contract probability should be read, not as a foregone conclusion.[1][2]

For traders, the main catalysts are the final campaign schedule, any late endorsements, and whether either campaign can shape turnout in the closing days before voting on June 23.[3][5] A recent Faceoff coverage reported that the candidates debated in the district, reinforcing that the race has moved into the final persuasion stage rather than an obscure filing-period contest.[7] Because the market resolves to the official Democratic nominee if one is settled by election day, and to “Other” only if no nominee is announced by November 3, the key watchpoint is the primary result itself, not any later replacement on the general-election ballot.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track NY-13 Democratic Primary Winner on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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 Best Prediction Markets 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?

Best Prediction Markets 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.

What does it cost to trade on Best Prediction Markets UK?

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