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Printed Thursday, 10 September 2026
Edition of Thursday, 17 September 2026

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Politics

Social Democrats won Swedish election with 27-30% vote

The Social Democrats secured a 27-30% share, while the Sweden Democrats finished as runners-up.

27% certain
lead market 27%next 23%1 venuesettles Sun 13 Sept14 markets behind this

The Swedish Social Democratic Party won the 2026 Parliamentary election, securing a plurality with roughly 27-30% of the vote. Its lead over the runner-up measured between 7 and 10 percentage points. The Sweden Democrats finished second and the Moderate Party third. Turnout was recorded between 84% and 86%.

The Social Democrats' vote share placed them well above the 7% threshold that separates major parties. Their Margin of 7-10 points kept them under the 31% level that would have indicated a broader mandate. This performance confirmed their position as the largest party despite a fragmented electorate.

In the Riksdag the Social Democrats obtained fewer than 105 seats, falling short of a Parliamentary majority. The Sweden Democrats remained behind, and the Moderates stayed in third place.

Voter participation reached between 84% and 86%, reflecting strong public engagement. No seats were secured by the Örebropartiet, which failed to cross the electoral threshold.

The election outcome obliges the Social Democrats to seek partners among smaller parties to achieve a governing coalition. The Moderate Party's third-place finish limits its influence in the upcoming negotiations.

Analysis

Because the Social Democrats captured fewer than 105 seats, they fall short of the 175 seats required for a majority in the 349-seat Riksdag. In Sweden's proportional system, the leading party must therefore negotiate a coalition or confidence-and-supply arrangement. The size of the shortfall determines how many and which smaller parties will be needed to form a stable government.

The Sweden Democrats' second-place finish confirms their status as the main opposition force. Their vote share, while below the Social Democrats, gives them leverage in any coalition talks, especially if Centre-right parties seek to limit Social Democratic influence. Their position may also shape the policy agenda, pushing immigration and law-and-order issues higher on the Parliamentary docket.

The Moderate Party, now third, lost the opportunity to lead a Centre-right bloc. Their reduced standing limits bargaining power and may confine them to a junior role in any coalition that excludes the Sweden Democrats. Consequently, the Centre-right spectrum faces a strategic choice between partnering with the Sweden Democrats or remaining in opposition.

Turnout between 84% and 86% indicates strong voter engagement, which can bolster the perceived legitimacy of the incoming government. The absence of Örebropartiet from the Riksdag means the parliament remains dominated by the three larger parties and established smaller groups. This concentration may simplify coalition negotiations but also restrict the diversity of viewpoints represented.

What this was built from

Each claim above traces to a market below, at the price it was trading when this edition went to press.

Sweden Parliamentary Election Winner: Swedish Social Democratic Party (S), 99% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: S Vote Share?: 27-30%, 52% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: 2nd Place: Sweden Democrats (SD), 81% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: 3rd Place: Moderate Party (M), 82% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: 4th Place: Centre Party (C), 39% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: 5th Place: Left Party (V), 49% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: 6th Place: Centre Party (C), 27% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Elections: Social Democratic Party # of seats?: <105, 66% settles Sunday, 13 September 2026 · polymarket · see the market
🇸🇪 Will Sweden’s Social Democrats win at least 31% of the vote in the September 13, 2026 general election?: No, 80% settles Sunday, 13 September 2026 · manifold · see the market
Sweden Parliamentary Election: V Over/Under 7%?: Over, 64% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: Turnout: 84-86%, 59% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: Vote Share Margin of Victory: S 7-10%, 89% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: Örebropartiet Win Seats?: No, 81% settles Sunday, 13 September 2026 · polymarket · see the market
Sweden Parliamentary Election: Liberals Win Seats?: Yes, 77% settles Sunday, 13 September 2026 · polymarket · see the market
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