The Next Prime Minister of Sweden market is one of the larger European leadership futures on the board, trading roughly $3.7M in cumulative volume on Polymarket across a field of ten named contenders. The race tracks who forms a government after the September 13, 2026 Riksdag election, and the Centre Party'June 2026 decision to back Social Democrat Magdalena Andersson over incumbent Moderate Ulf Kristersson redrew the coalition arithmetic that had held since 2022. The live board above ranks the current price on every contender; the market resolves to whoever is officially appointed and assumes office as Prime Minister after the vote.
The Next Prime Minister of Sweden board has stopped looking like a race. With the September 13, 2026 Riksdag election under a month away, Social Democrat Magdalena Andersson trades at 86c and incumbent Moderate Ulf Kristersson at 13c, with the remaining eight named contenders priced at 1c or below as of August 17, 2026. The concentration is not a polling story. It is a coalition story: the Centre Party'June 2026 decision to name Andersson as its preferred prime-ministerial candidate removed the arithmetic that kept Kristersson in office after 2022. The market carries roughly $3.7M in cumulative volume on Polymarket, and the live board above is the current read on every contender.
Andersson leads the Next Prime Minister of Sweden field on two separate strengths. The first is raw polling: Demoskop's survey fielded July 29 to August 10, 2026 put the Social Democrats at 30.2%, comfortably the largest party in the country, with the four-party opposition bloc at 50.6% against 46.9% for the governing side. The second is the coalition math, which is what actually decides the premiership. Centre Party leader Elisabeth Thand Ringqvist, who took over the party on November 13, 2025, said in June 2026 that Kristersson had disqualified himself as a candidate over his cooperation with the Sweden Democrats and the prospect of handing them cabinet posts. She attached four conditions to Centre support for Andersson: more jobs, lower taxes, lower emissions, and new rural investment.
The cleanest way to read Andersson's price is against the party contract next door. The 2026 Sweden parliamentary election market prices the Social Democrats at 98c to be the winning party across Kalshi and Polymarket, while Andersson sits at 86c to be Prime Minister. That roughly 12c gap is the entire government-formation risk premium: the market is close to certain the Social Democrats finish first, and materially less certain that finishing first converts into the Speaker's nomination and a surviving government. Andersson has held the office before, for a matter of hours in November 2021 before her budget fell and again from the end of that month, so the market is pricing a return rather than a debut.
Kristersson at 13c is the only other contender the board takes seriously, and the case for him is that the gap has been closing. The opposition bloc measured 55.2% in the June 2026 Statistics Sweden reading and 50.6% in the August Demoskop poll, a 4.6-point compression in roughly two months against a governing bloc at 46.9%. His own party polls 16.8%, third behind both the Social Democrats and the Sweden Democrats, so his path runs entirely through the Tidö arrangement rather than through Moderate strength.
That arrangement got firmer on one flank and broke on the other. In March 2026 Liberal leader Simona Mohamsson, elected on June 24, 2025, signed a 15-point deal with Jimmie Åkesson under which the Liberals would accept the Sweden Democrats in government if the Tidö parties win, reversing the party's long-standing refusal. That consolidated the right bloc into a genuine four-party government option. It also cost Kristersson the Centre Party, and the Centre is the piece he cannot replace. A 3.7-point bloc deficit with under a month of campaign left is the whole bull case at 13c.
Ã…kesson is the clearest illustration of why an electoral market and a premiership market are different instruments. The Sweden Democrats polled 20.2% in the August Demoskop survey, second in the country and ahead of the Moderates, yet Ã…kesson trades at 1c to become Prime Minister. No bloc has offered him the office, and the Liberal deal that brought his party closer to government explicitly routes around him as head of it. His contract also carries the heaviest volume on the entire board at roughly $1.4M, which is what a market that is confident in a "no" looks like when the underlying party is large enough to be worth trading anyway.
Below him the tail is dormant. Christian Democrat leader Ebba Busch and Thand Ringqvist sit at 1c, and Left Party leader Nooshi Dadgostar, Mohamsson, and Green Party co-spokespersons Daniel Helldén and Amanda Lind price at 0c. The board still lists Anna-Karin Hatt, who led the Centre Party for roughly six months in 2025 before Thand Ringqvist replaced her, a leftover contract that has not traded to a real price since the leadership changed. For anything below the top two, the live board above is the only honest read on whether a name is moving or simply listed.
The Next Prime Minister of Sweden market resolves to the individual who is officially appointed and assumes office as Prime Minister following the September 13, 2026 Riksdag election. Sweden does not elect its head of government directly. Voters choose 349 members of the Riksdag, the Speaker then nominates a prime-ministerial candidate, and the Riksdag confirms the government through a negative-parliamentarism vote in which a candidate takes office unless an absolute majority votes against. An interim or caretaker Prime Minister does not count toward resolution; the winner must officially assume office. The winning contender'contract pays $1 per share while every other contender resolves to $0. If no Prime Minister has assumed office by June 30, 2027, the market resolves to "Other."
The premiership contract is one half of the Swedish election board. The other is the party contract linked above, which prices which party finishes first and trades on both Kalshi and Polymarket. The same confidence-and-coalition mechanics drive the Next Prime Minister of Israel market, where a fragmented Knesset produces the same gap between party strength and personal odds, and the 2027 French presidential election odds, the largest European leadership contract on the board. Every leadership and election race sits in the politics prediction markets hub.
Resolves to the individual officially appointed and assuming office as Prime Minister of Sweden following the September 13, 2026 Riksdag election. Sweden'head of government is not directly elected; voters choose 349 members of the Riksdag, the Speaker nominates a prime-ministerial candidate, and the Riksdag confirms the government under negative parliamentarism, in which a candidate takes office unless an absolute majority votes against. Any interim or caretaker Prime Minister does not count; the individual must officially assume office. The winning contender'contract pays $1 per share; all other contender contracts resolve to $0. If no such Prime Minister assumes office by June 30, 2027, the market resolves to "Other." The primary resolution source is official information from the Government of Sweden, with a consensus of credible reporting used as a secondary source.
As of August 17, 2026 the board has Social Democrat Magdalena Andersson at 86c and incumbent Moderate Ulf Kristersson at 13c on Polymarket, with the other eight named contenders at 1c or below. The live board above carries the current price on every contender.
The market resolves after the September 13, 2026 Riksdag election, to whoever is officially appointed and assumes office as Prime Minister. An interim or caretaker Prime Minister does not count, and if no Prime Minister assumes office by June 30, 2027, the market resolves to "Other."
The Next Prime Minister of Sweden market is currently listed on Polymarket, which carries individual contracts on each of the ten named contenders. The related party contract on which party wins the election trades on both Kalshi and Polymarket.
Magdalena Andersson is the favorite at 86c as of August 17, 2026, backed by the Social Democrats polling 30.2% in the Demoskop survey fielded July 29 to August 10 and by the Centre Party naming her its preferred prime-ministerial candidate in June 2026.
Watch whether the bloc gap keeps compressing after the 50.6% to 46.9% August reading, whether Andersson meets the Centre Party'four conditions on jobs, taxes, emissions, and rural investment, and then the Speaker'nomination and confidence vote that follow the September 13, 2026 result.