[1] It formed a bloc opposing President Juvénal Habyarimana alongside the Liberal Party and the Republican Democratic Movement, but by the time of the Rwandan genocide, it was the only major party that Habyarimana had failed to split.

[1] The PSD's main leaders were killed in the morning of the first day of the genocide as Théoneste Bagosora sought to create a vacuum in order to seize power.

[1] At the end of the genocide the party joined the national unity government.

The party's vote share rose to 13% in the 2008 elections, as it retained its seven seats.

[3] In the 2013 parliamentary elections the party again received 13% of the vote, winning seven seats.