It emerged in 1913 from the left-wing of the dominant Liberal Union, of which it continued to be a government coalition partner until 1919. In the 1913 general election the party won 2.8% of the vote and 11 seats in the Chamber of Deputies. In 1919 the PD was merged with other liberal parties and groupings in the Social Democracy party, that gained 10.9% and 60 seats in the 1919 general election, while other Democrats joined Liberal–Radical joint lists.[1][2]
