The 2007 election to the Grand Council was held in the canton of Vaud, Switzerland, on 11 March 2007. All 150 members of the Grand Council were elected for four-year terms, a reduction of 30 from the size of the previous legislature. The Social Democratic Party secured the largest number of seats once again; although it lost seven seats, its percent share of the seats remained constant. Despite the reduction in the size of the legislature, the populist Swiss People's Party and Green Party both managed to gain seats.