Historians view the end of the progressive age as the 1920's. The period from 1890-1920 saw much political reform and social activism in answer to the flagrant abuses of political machines and monopolizing corporations.
The modern age.
Progressive Democrats ended in 2009.
Progressive Party - China - ended in 1916.
Donegal Progressive Party ended in 2009.
Progressive Mine Workers ended in 1999.
Progressive Federal Party ended in 1989.
National Progressive Democrats ended in 1963.
Progressive Constitutionalist Party ended in 1929.
Australian Progressive Alliance ended in 2005.
Wisconsin Progressive Party ended in 1946.
Progressive Democratic Alliance ended in 1997.
Progressive Party of Manitoba ended in 1932.