Clacton by-election Winner

Platform comparison

Market context

The real-world event driving this market is Nigel Farage’s announced resignation as the MP for Clacton, which legally triggers a parliamentary by-election in the Essex constituency. Farage intends to stand again in the race, framing it as a contest between “the people” and the political establishment, while several major parties, including Labour and the Greens, have publicly ruled out fielding candidates [1][7][8].

Historically, Clacton has been a safe seat for Farage, who won it decisively in the 2014 by-election with 57% of the vote and retained it in 2015 and 2019 [4][6]. Comparable UK by-elections where the incumbent resigns to re-run—such as Peterborough in 2019 or Sedgefield in 2024—have seen the sitting MP retain the seat unless significant scandal or a strong challenger emerges. Given Farage’s entrenched local support and the absence of credible opposition, the 95% YES probability aligns with both constituency history and recent by-election precedents [4].

Traders should monitor formal announcements from Tendring District Council on the by-election timetable, Farage’s re-registration as a candidate, and any late-entry challengers from minor parties. A recent report in The Economist notes that Farage’s financial disclosures remain under scrutiny, which could act as a volatility catalyst if new details emerge [2]. Programmatically, this market is best approached via conditional orders tied to candidate registration deadlines and copy-trading bots that track official council publications, ensuring execution before the settlement window closes in June 2027 [3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi Fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.