Government and politics in Solothurn (Espace Mittelland, Switzerland): official figures
The canton of Solothurn is run by a 5-member cantonal government, elected in 2025, and a 100-seat cantonal parliament, last elected in 2025.
Which party is largest in Solothurn?
The largest party in the cantonal parliament of Solothurn after the 2025 election is the Swiss People's Party (SVP) with 25 of 100 seats (25.0%).
Source: Federal Statistical Office (BFS/OFS) · saved copyHow many women are in the Solothurn parliament?
Women won 34 of the 100 seats in the Solothurn parliament in 2025, a share of 34.0% (all cantonal parliaments: 35.0%).
Source: Federal Statistical Office (BFS/OFS) · saved copyWhich parties are in the government of Solothurn?
The 5 seats of the Solothurn cantonal government (elected 2025, as recorded on 18 October 2026) are held by: Social Democrats (SP) 2, FDP (The Liberals) 1, Swiss People's Party (SVP) 1, Centre party (Die Mitte) 1.
Source: Federal Statistical Office (BFS/OFS) · saved copyWho governs the canton of Solothurn?
In Solothurn the Social Democrats (SP) holds the most seats on the cantonal executive, 2 of 5, and 4 different parties are represented in it.
Source: Federal Statistical Office (BFS/OFS) · saved copyMore figures
- Seats in the Solothurn parliament elected in 2025: Swiss People's Party (SVP) 25, Social Democrats (SP) 21, FDP (The Liberals) 20, Centre party (Die Mitte) 20, Greens 9, Green Liberals (GLP) 4. Source: Federal Statistical Office (BFS/OFS) · saved copy
- With 100 members for 291,583 residents, the Solothurn parliament has one seat for every 2,916 people. Source: Federal Statistical Office (BFS/OFS) · saved copy
How Solothurn compares with other cantons in Switzerland
Women in the cantonal parliament (% of seats, latest election) (2026)
Solothurn ranks 12 of 26, highest first.
| Rank | Area | Women in the cantonal parliament (% of seats, latest election) |
|---|---|---|
| 9 | Genève | 36.0% |
| 10 | Vaud | 36.0% |
| 11 | Appenzell Ausserrhoden | 35.4% |
| 12 | Solothurn | 34.0% |
| 13 | Fribourg / Freiburg | 33.6% |
| 14 | Ticino | 32.2% |
| 15 | Graubünden / Grigioni / Grischun | 31.7% |
Seat share of the largest party in the cantonal parliament (%) (2026)
Solothurn ranks 20 of 25, highest first.
| Rank | Area | Seat share of the largest party in the cantonal parliament (%) |
|---|---|---|
| 17 | Nidwalden | 28.3% |
| 18 | Luzern | 26.7% |
| 19 | Zürich | 25.6% |
| 20 | Solothurn | 25.0% |
| 21 | Zug | 25.0% |
| 22 | Fribourg / Freiburg | 23.6% |
| 23 | Basel-Landschaft | 23.3% |
Residents per cantonal parliament seat (2025 population) (2026)
Solothurn ranks 11 of 26, highest first.
| Rank | Area | Residents per cantonal parliament seat (2025 population) |
|---|---|---|
| 8 | Luzern | 3,679 |
| 9 | Basel-Landschaft | 3,376 |
| 10 | Fribourg / Freiburg | 3,190 |
| 11 | Solothurn | 2,916 |
| 12 | Valais / Wallis | 2,893 |
| 13 | Thurgau | 2,329 |
| 14 | Basel-Stadt | 2,042 |
SVP share of seats in the cantonal parliament (%) (2026)
Solothurn ranks 13 of 25, highest first.
| Rank | Area | SVP share of seats in the cantonal parliament (%) |
|---|---|---|
| 10 | Nidwalden | 28.3% |
| 11 | Uri | 26.6% |
| 12 | Zürich | 25.6% |
| 13 | Solothurn | 25.0% |
| 14 | Zug | 25.0% |
| 15 | Basel-Landschaft | 23.3% |
| 16 | Luzern | 22.5% |
SP share of seats in the cantonal parliament (%) (2026)
Solothurn ranks 8 of 25, highest first.
| Rank | Area | SP share of seats in the cantonal parliament (%) |
|---|---|---|
| 5 | Bern / Berne | 22.5% |
| 6 | Basel-Landschaft | 22.2% |
| 7 | Vaud | 21.3% |
| 8 | Solothurn | 21.0% |
| 9 | Zürich | 20.0% |
| 10 | Fribourg / Freiburg | 19.1% |
| 11 | Genève | 18.0% |
More on Solothurn: overview · economy and jobs · health · education and schools · poverty and living standards · government budget · Espace Mittelland · Switzerland
Sources
- Federal Statistical Office (BFS/OFS): Kantonale Parlamentswahlen: Mandatsverteilung nach Parteien, Geschlecht und Kantonen (elections counted up to 4 October 2026), read 24 October 2026 · saved copy (SHA-256 fd812b0d11ac…)
- Federal Statistical Office (BFS/OFS): Kantonale Regierungswahlen: Mandatsverteilung nach Partei und Kanton (T 17.02.06.01, elections counted up to 18 October 2026), read 24 October 2026 · saved copy (SHA-256 b0f5f46a4367…)
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