The Cantonal Council of Solothurn is the legislature of the canton of Solothurn, in Switzerland. Solothurn has a unicameral legislature. The Cantonal Council has 100 seats, with members elected every four years. In the last election, on 7 March 2009, saw the centre-right maintain its dominance of the Cantonal Council. FDP.The Liberals lost three seats, but remained the largest party, with 27 seats. The Christian Democrats added two seats, becoming the second-largest party, on 24 seats. The Social Democrats lost ground, falling three seats to 21 overall, whilst the Swiss People's Party gained one seat to 18. The left-wing Green Party and centre-right Green Liberal Party also gained two seats apiece. ! style="background-color:#E9E9E9;text-align:left;" colspan=2 |Party ! style="background-color:#E9E9E9;text-align:left;" width=150px |Ideology ! style="background-color:#E9E9E9;text-align:right;" width=50px |Vote % ! style="background-color:#E9E9E9;text-align:right;" width=50px |Vote % ± ! style="background-color:#E9E9E9;text-align:right;" width=50px |Seats ! style="background-color:#E9E9E9;text-align:right;" width=50px |Seats ± ! style="text-align:left;" colspan=3| Total

[{{legend|#84B414|GPS: 10 seats}} {{legend|#CC0000|SP: 20 seats}} {{legend|#A6CF42|glp: 6 seats}} {{legend|#FFFF00|EVP: 1 seat}} {{legend|#DB8300|CVP: 20 seats}} {{legend|#007AD2|FDP: 22 seats}} {{legend|#006400|SVP: 21 seats|undefined | upload.wikimedia.org/wikipedia/commons/7/73/Cantonal///Council///Solothurn///2021.svg]