The 2009 election to the Grand Council was held in the canton of Geneva, Switzerland, on 11 October 2009. All 100 members of the Grand Council were elected for four-year terms.
The Liberal Party remained the largest party, with twenty seats, having lost three since 2005. The centre-right , between the Liberals, Free Democratic Party, and Christian Democrats lost a total of five seats. The main winners were the populist Geneva Citizens' Movement, who almost doubled their number of seats to draw level with the Green Party as the second-largest contingent. The far left alliance between solidaritéS and the Swiss Party of Labour failed to overcome the 7% threshold for representation, despite each having each separately received more than 6% at the 2005 election.
|- ! 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 % ñ ! style="background-color:#E9E9E9;text-align:right;" width=50px |Seats ! style="background-color:#E9E9E9;text-align:right;" width=50px |Seats ñ |- | width=5px style="background-color: " | | style="text-align:left;" | Liberal Party | style="text-align:left;" | Classical liberalism | style="text-align:right;" | 16.71 | style="text-align:right;" | âÂÂ1.71 | style="text-align:right;" | 20 | style="text-align:right;" | âÂÂ3 |- | style="background-color: " | | style="text-align:left;" | Green Party | style="text-align:left;" | Green politics | style="text-align:right;" | 15.34 | style="text-align:right;" | +1.51 | style="text-align:right;" | 17 | style="text-align:right;" | +1 |- | style="background-color: " | | style="text-align:left;" | Geneva Citizens' Movement | style="text-align:left;" | Populism | style="text-align:right;" | 14.74 | style="text-align:right;" | +7.01 | style="text-align:right;" | 17 | style="text-align:right;" | +8 |- | style="background-color: " | | style="text-align:left;" | Social Democratic Party | style="text-align:left;" | Social democracy | style="text-align:right;" | 12.91 | style="text-align:right;" | âÂÂ1.71 | style="text-align:right;" | 15 | style="text-align:right;" | âÂÂ2 |- | style="background-color: " | | style="text-align:left;" | Christian Democratic People's Party | style="text-align:left;" | Christian democracy | style="text-align:right;" | 9.91 | style="text-align:right;" | +0.07 | style="text-align:right;" | 11 | style="text-align:right;" | âÂÂ1 |- | style="background-color: " | | style="text-align:left;" | Free Democratic Party | style="text-align:left;" | Classical liberalism | style="text-align:right;" | 9.59 | style="text-align:right;" | âÂÂ0.90 | style="text-align:right;" | 11 | style="text-align:right;" | âÂÂ1 |- | style="background-color: " | | style="text-align:left;" | Swiss People's Party | style="text-align:left;" | National conservatism | style="text-align:right;" | 8.56 | style="text-align:right;" | âÂÂ1.04 | style="text-align:right;" | 9 | style="text-align:right;" | âÂÂ2 |- | style="background-color: " | | style="text-align:left;" | solidaritéSâÂÂSwiss Party of Labour | style="text-align:left;" | Socialism | style="text-align:right;" | 6.40 | style="text-align:right;" | âÂÂ7.17<sup>1</sup> | style="text-align:right;" | 0 | style="text-align:right;" | ñ0 |- | | style="text-align:left;" | Defence of the Elderly | style="text-align:left;" | Pensioners' party | style="text-align:right;" | 5.85 | style="text-align:right;" | N/A | style="text-align:right;" | 0 | style="text-align:right;" | N/A |- style="background: #E9E9E9" ! style="text-align:left;" colspan=3| Total (turnout 39.66%) | style="text-align:right;" | 100.00 | style="text-align:right;" | â | 100 | style="text-align:right;" | â |- | colspan=9 style="text-align:left;" | <small><sup>1</sup> Compared to total of separate solidaritéS (6.67%) and 'Alliance of the Left' (6.90%) lists in 2005</small> |- | colspan=9 style="text-align:left;" | Source: Republic and Canton of Geneva