It is currently represented with two seats in the parliament of Latvia as a part of the Union of Greens and Farmers alliance after an absence of 20 years.

Once Latvia became independent, LSDSP was one of the two most influential political parties (along with the Latvian Farmers' Union).

LSDSP members, like Pauls Kalniņš and others, were involved with the Latvian Central Council resistance group.

[7] When many Latvians left Latvia during World War II, the LSDSP was restored as an "exile organization", operating in Sweden since 1945, and later in other Western countries.

The parliamentary election of 2006 brought even more dissatisfying results for the LSDSP, as the party got 3.5% of votes and thus got no representation in the parliament once again.

For the 2010 parliamentary election, the LSDSP formed the Responsibility Alliance with smaller parties, but their performance was poor, receiving less than 1% of the vote.

2022 brought a historic turn for the party, when on June 1 it joined the Union of Greens and Farmers (ZZS) after the Latvian Green Party had left the alliance, as the second member of ZZS is the Farmer's Union, LSDSP's main rival in the 1920s and 1930s.