The party failed to reach the 3% threshold of the popular vote in the 2004 elections, with 2.2%; three months later it gained 4.12% of the vote and one seat in the 2004 European Parliamentary Elections. LAOS received 3.8% of the vote in the 2007 elections, electing 10 members of parliament. In 2009 LAOS managed to elect two representatives in the European Parliament, receiving 7.14% of the vote. After receiving 5.63% of the vote and electing 15 members of parliament in the 2009 elections, LAOS dropped below the 3% threshold in 2012 and failed to secure any seats in parliament. On 8 April 2016 LAOS joined the alliance National Unity. The party did not contest the 2019 elections.
