Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.

Clacton by-election: 2nd place | Kalshi Alternative — market: 91% Yes

Name: Clacton by-election: 2nd place
Start: 2026-07-08T01:54:28.672Z
End: 2026-08-13T16:00:00.000Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Kalshi Alternative) Pick polygram.ink (preferred broker)	91%	9%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Go to the live market →
Polymarket (direct) polymarket.com	91%	9%	0%	Geo-blocked in US/UK/EU	USDC, on-chain	Go to the live market →
Kalshi kalshi.com	—	—	Up to 7% per trade	US-only, KYC required	USD	Go to the live market →
Betfair Exchange betfair.com	—	—	2-5% commission	Full KYC from first trade	GBP / EUR	Go to the live market →
Manifold Markets manifold.markets	—	—	Play-money (mana)	None — play-money	Mana (no cash-out)	Go to the live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

Outcome	Probability
Count Binface	91%
Person J	50%
Person K	50%
Person L	50%
Person M	50%
Person N	50%
Person O	50%
Person P	50%
Person Q	50%
Person R	50%
Person S	50%
Person T	50%
Person U	50%
Person V	50%
Person W	50%
Person X	50%
Person Y	50%
Person Z	50%
Person AA	50%
Person AB	50%
Person AC	50%
Person AD	50%
Person AE	50%
Person AF	50%
Person AG	50%
Person AH	50%
Person AI	50%
Person AJ	50%
Person AK	50%
Person AL	50%
Person AM	50%
Person AN	50%
Person AO	50%
Person AP	50%
Person AQ	50%
Person AR	50%
Other	50%
Laurence Fox	4%
Nigel Farage	2%
William Clouston	2%
Giles Watling	0%
Jovan Owusu-Nepaul	0%
Matthew Bensilum	0%
Natasha Osben	0%
Tony Mack	0%
Andrew Pemberton	0%
Piers Corbyn	0%
Adham Alkhatip	0%
Rees Cowne	0%
Kai Stephens	0%
Luke Worley	0%
John Stevens	0%
Pamela Walford	0%

Market context

Market consensus: 91% chance of clacton by-election: 2nd place. Prediction markets aggregate real capital to produce this probability signal. A by-election for the United Kingdom parliamentary constituency of Clacton is expected to be held soon following the announced resignation of incumbent Nigel Farage. This market w…

Methodology

This page compares Clacton by-election: 2nd place specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Polymarket vs Kalshi — which is better?: Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
What does Polymarket cost vs Kalshi?: Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
What about Smarkets as an alternative?: Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
Which platform is accessible globally?: Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.
Which platform supports Klarna/SOFORT?: Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.

Chris ReedPolitical Forecasting Editorand

Maya TorresFinancial Markets Writer

Trade Clacton by-election: 2nd place on Kalshi Alternative

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Clacton by-election: 2nd place

Platform comparison

Outcome probabilities

Market context

Methodology

Resolution & payout

FAQ

Trade Clacton by-election: 2nd place on Kalshi Alternative

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