Next Prime Minister of Sweden

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Active sub-markets

Market context

Parliamentary elections in Sweden are set for 13 September 2026, where voters will elect 349 members of the Riksdag who then choose the prime minister. This fixed date is critical for programmatically approaching the market: a power-user would build a conditional order bot that triggers only when poll volatility exceeds a threshold, or when coalition talks begin, rather than trading on static odds. The current 0% crowd-implied probability reflects the market’s premature state; no candidate has yet been appointed, and interim leaders do not count for resolution.

Historically, Swedish prime ministers emerge from complex coalition negotiations, often requiring three to four parties to secure a majority. In 2022, after a tight election, Ulf Kristersson of Moderaterna became prime minister only after Sverigedemokraterna provided parliamentary support without joining the government. This precedent frames how to read the current 0%: it is not a signal of impossibility, but of unresolved political mechanics. A trader should monitor coalition scenarios and polling shifts, as the frontrunner Socialdemokraterna (32.4%) lacks a majority and must negotiate with smaller parties like Centerpartiet or Miljöpartiet[2].

Key catalysts include the official election schedule, coalition announcement deadlines, and foreign malign information campaigns targeting the 2026 vote. The Swedish government has activated agencies to protect against external threats, making information integrity a dependency for stable outcomes[4]. A programmatic trader would set alerts for PolitPro poll updates and Riksdag session dates, as these directly influence coalition viability. Recent polling shows Sverigedemokraterna at 19.4% and Moderaterna at 17.2%, suggesting a fragmented parliament where no single party can govern alone[2]. The settlement window ends 13 September 2026, with resolution possible only if an individual officially assumes office by 30 June 2027.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Next Prime Minister of Sweden 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

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 Polymarket App 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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket App UK triggers a quick verification flow that finishes in minutes.