[5] In the buildup to the April 2005 parliamentary elections the party formed an alliance named L'Alternativa with the Parochial Union of Independents Group (GUPI) and Democratic Renewal to contest parish-level seats.

The April 2009 parliamentary elections saw the party renew its alliance with GUPI and some independents.

[6] The alliance won 14 of the 28 seats and PS leader Jaume Bartumeu became Prime Minister, with the Andorra for Change party supporting the government.

[7] The April 2011 parliamentary elections saw the PS receive 34.8% of the vote, reducing its representation to six seats.

[7] In the March 2015 parliamentary elections, the party ran in alliance with the Greens of Andorra, Citizens' Initiative and independent candidates.