Social Democratic Party of Greenberg

The Social Democratic Party of Greenberg (commonly known as the Greenberg SDP or Greenberg Social Democrats) is the branch of the Social Democratic Party of Enderron operating in Greenberg Prefecture. The party is the one of the two major political parties in Greenberg politics, the other being the Liberal Party of Greenberg. The current party leader is Randy Koh, since 2021. The party has formed the Official Opposition in Greenberg since 2015.

The Greenberg SDP is considered to be one of the more centrist branches of the federal party, due to the relatively conservative nature of Greenberg politics. The party is heavily localist, having supported Greenberg prefecturehood since the movement gained ground in the late 1960s. It is electorally strongest in the city of Van Buren and the peri-urban southwestern corner of the prefecture.

The SDP has governed Greenberg for a total of eight years since 1979, under three premiers: Neil Wagner (1999–2003), Brian O'Malley (2011–2013) and Rebecca Henderson (2013–2015). It has never won Greenberg's sole seat in the Enderronian Parliament.