NY-08 Democratic Primary Winner

Platform comparison

Active sub-markets

Market context

New York's 8th Congressional District will hold a Democratic primary in 2026 to select its nominee for the House of Representatives seat currently held by Representative Jerrold Nadler, who has represented the district since 1992. The district encompasses parts of Manhattan and Brooklyn, including neighbourhoods such as Greenwich Village, the Upper West Side, and Park Slope. The 100% implied probability across prediction markets reflects the near-certainty that a Democratic primary will occur in this heavily Democratic district, where the party's nominee has consistently won the general election by substantial margins.

Historical precedent suggests that open-seat Democratic primaries in Manhattan-Brooklyn districts typically attract multiple credible candidates and generate significant media attention. When Anthony Weiner vacated NY-13 in 2011, the resulting primary drew five major contenders; similarly, the 2022 NY-12 primary following Carolyn Maloney's retirement featured a competitive three-way race. The current 100% probability reflects confidence that the Democratic Party machinery will execute a standard primary process rather than any scenario where the seat goes uncontested or the primary is cancelled—an outcome with negligible historical precedent in this region.

Traders should monitor announcements regarding Nadler's formal retirement decision and the New York Democratic Party's primary calendar, typically set in early 2026. The New York primary election is scheduled for June 2026, with the settlement window closing on 23 June. Key catalysts include candidate declarations, which usually cluster in the three months preceding the primary, and any unexpected procedural changes from the state party. Recent reporting from New York political outlets will signal whether the expected multi-candidate field materialises.

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

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, 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.

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 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.