The party was created by Attorney-GeneralEdward Patrick Morris in 1907, when he split from the ruling Liberal Party to found his own political vehicle. The party tied with the Liberals in the 1908 election but, when no party was able to form a government, new elections were held which the People's Party won with 26 seats to 10 for the Liberals.
Cashin's government was defeated in the 1919 election by Richard Squires and his Liberal Reform Party (a merger between the Liberals and the FPU). In opposition, Cashin changed the name of the party to the Liberal-Labour-Progressive Party, which disappeared after the 1923 election. Some members of that party joined Albert Hickman's new Liberal-Progressive Party, and others joined with Tories to form the Liberal-Conservative-Progressive Party.
Although not a sectarian party, the People's Party and its immediate successor had their support concentrated among Catholic voters, particularly on the south coast of the island.