Dublin-Central By-Election Winner

Platform comparison

Active sub-markets

Market context

A by-election is expected in Dublin Central to fill the Dáil seat left vacant by Paschal Donohoe’s resignation, and the result will be shaped by both local vote transfer patterns and the broader strength of the main parties in urban Dublin. Irish Election Projections currently treats the race as open behind Sinn Féin leader Mary Lou McDonald and Paschal Donohoe’s replacement contest is being watched for whether Fianna Fáil can finally convert long-running support into the seat. In comparable Irish constituency by-elections, a small number of transfers can matter more than headline polling, so a 0% crowd-implied probability mainly signals that the market has not yet priced a defined, settled field rather than that the outcome is impossible.

Traders should watch for the writ, nomination deadlines, the formal ballot paper, and any late candidate changes, as these will determine whether the field narrows or fragments. Recent reporting in the Irish Examiner said Tánaiste Simon Harris has ordered a “deep dive” into Polymarket after concerns over suspicious betting on Dublin Central, while the Irish Times reported more than $1m had already been traded on the race, with much of it concentrated on Gerrry Hutch-related positions and other named runners. For market-access context, Polymarket sits in a regulatory grey area in Ireland; Germany’s GlüStV regime is relevant because German-facing access to unlicensed betting products can be restricted, and US CFTC reach remains important because the platform has faced scrutiny over whether its event contracts fall within US derivatives enforcement. The advertised no-KYC threshold up to $1,500 means smaller positions can often be opened with limited identity checks, but larger activity may trigger additional verification and is still subject to platform and jurisdictional controls.

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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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.

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.

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.