|Founded||4 February 2003|
|Dissolved||12 November 2012|
|Headquarters||Via 25 marzo, 19/b – Domagnano|
In the 2006 general election PS won 2.4% of the vote and 1 out of 60 seats in the Grand and General Council. Since 2008 it was part of the Sammarinese Union of Moderates together with Sammarinese National Alliance and stood in opposition against the 2006-2008 coalition government of the Party of Socialists and Democrats, Popular Alliance and United Left.
In the 2008 general election the party participated within the Sammarinese Union of Moderates coalition that won 874 votes (4.17%) and got 2 seats. The Sammarinese Union of Moderates was part of the centre-right Pact for San Marino coalition which won 35 seats out of 60 in the Grand and General Council in the Sammarinese parliamentary election, 2008 gaining 54.22% of the national vote and a governmental majority of 5. The Sammarinese Populars itself gained a few seats and a small percentage of the national vote as part of the coalition.
The party was finally annihilated during the election of 2012.