Social Democratic Party (Ecoralia)

The Social Democratic Party (: Sociaal-Democratische Partij; S on the Ecoralian ballot) is a  in Ecoralia. It was formed in 1840 as a coalition of mayoral candidates in voogd elections. The party emerged as a major political force following the adoption of the 1908 constitution and the establishment of the national parliament, the Pratenplaats.

The party is the largest opposition party in the Pratenplaats, with 66 seats. The current mayors of Monstad and Netjemond are also Social Democrats.