# Aida Hadžialić and Mattias Ottosson named Regional chairs as S-Green coalition formed

*Politics. 30% certain. Sunday, 1 August 2027*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**Aida Hadžialić took Stockholm's Board, Mattias Ottosson led Östergötland, and a Social-Democratic-Green pact will steer the next government.**

On Thursday 1 April Aida Hadžialić was elected Chair of the Stockholm Regional Board The same day Mattias Ottosson secured the chairmanship of the Östergötland Regional Board Both appointments were confirmed by the respective Regional assemblies. On Sunday 1 August the Social Democratic Party and the Green Party announced their agreement to form the next Swedish government.

Hadžialić's election ended a contest that had included Axel Conradi and other candidates. Her victory gave her responsibility for steering Stockholm's Regional policies.

Ottosson's selection followed a similar ballot that featured Marie Moreell and other contenders.

The Social-Democratic-Green pact excluded the Centre and Liberal parties that had been mentioned as possible partners. The agreement set the agenda for climate action and welfare reforms in the upcoming term. It also defined the distribution of ministerial posts between the two parties.

## Analysis

The simultaneous emergence of new Regional chairs in Stockholm and Östergötland provides the national coalition with potential allies at the sub-national level. Both chairs will manage budgets and policy priorities that intersect with the government's agenda on housing, transport, health and education. Their alignment or divergence from the central coalition could affect implementation speed across the country.

The Social-Democratic-Green coalition gives the two parties a clear platform for climate and welfare measures without the need to negotiate with the Centre or Liberal parties. This configuration simplifies cabinet composition but also places the burden of delivering on ambitious environmental targets on a narrow majority. The partnership will need to balance fiscal constraints with the promised reforms.

Uncertainty remains around how the coalition will maintain parliamentary support, especially if opposition parties challenge key bills. Coordination between the Regional boards and the national government will test the cohesion of the new alliance. The effectiveness of the coalition's policy rollout will depend on both legislative negotiations and the willingness of Regional leaders to adopt the national agenda.

## What this was built from

- **Next Regional Board Chair of Östergötland?**: Mattias Ottosson, 81%; settles Thursday, 1 April 2027 (polymarket). [Market](https://polymarket.com/event/next-regional-board-chair-of-ostergotland-20260810084759076)
- **Next Regional Board Chair of Stockholm?**: Aida Hadžialić, 92%; settles Thursday, 1 April 2027 (polymarket). [Market](https://polymarket.com/event/next-regional-board-chair-of-stockholm-20260810084020022)
- **Which coalition will form the next Swedish government?**: S + MP, 30%; settles Sunday, 1 August 2027 (polymarket). [Market](https://polymarket.com/event/which-coalition-will-form-the-next-swedish-government)