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 the 349 members of the Riksdag will be elected to subsequently choose the nation’s next Prime Minister[1][4]. The market currently shows a 0% implied probability for any specific individual, reflecting the absence of a confirmed nominee before the vote and the constitutional process that only begins after the election results are finalised[1]. This mirrors historical precedents in Sweden, where Prime Ministers are rarely appointed until coalition negotiations conclude post-election, often leaving the market blank until late September or early October[3][6]. Comparable cases from 2014 and 2022 show that probability distributions only solidify once the Riksdag formally elects a candidate, meaning early 0% readings are standard and not indicative of market failure[3].

Traders should monitor the release of new opinion polls over the coming 81 days, as coalition scenarios and leadership ambitions will shape expectations before the election[3]. Key catalysts include the distribution of voting cards to eligible voters by 26 August 2026, which confirms voter registration and polling station assignments[2], and the Swedish government’s ongoing efforts to protect the election from foreign malign information influence[7]. The live vote count on val.se during the election evening will provide the first concrete data on party performance, directly influencing which coalition paths become viable[2]. Any snap election announcements or shifts in polling leadership for major parties like the Moderates or Social Democrats will be critical dependencies for price movement[1].

From a regulatory standpoint, this market operates under the German GlüStV framework for gambling and the US CFTC’s reach over derivatives, though it remains accessible to users without KYC verification for transactions up to $1,500[1]. This ‘no-KYC up to $1,500’ threshold means individual traders can participate without submitting identity documents, provided their exposure stays within the limit, enhancing accessibility while maintaining compliance with anti-money laundering standards[1]. The primary resolution source is official information from the Riksdag, ensuring that only individuals who officially assume office—excluding interim or caretaker Prime Ministers—count toward settlement[1]. If no Prime Minister is appointed by 30 June 2027, the market resolves to “Other”, a clause that protects against indefinite uncertainty[1].

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). 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

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.

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.

Do I need to KYC for this market?

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