organized in 1912 by followers of Theodore Roosevelt
formed in 1924 under the leadership of Robert M. La Follette
formed in 1948, originally under the leadership of Henry A. Wallace
See Progressive Party in American Heritage Dictionary 4
noun
A U.S. political party that was organized by Republican insurgents in 1911 and supported the presidential candidacy of Theodore Roosevelt in 1912. Also called Bull Moose Party.
A U.S. political party organized in 1924 that supported the presidential candidacy of Robert M. La Follette and was active in Wisconsin until 1946.
A U.S. political party formed in 1948 to support the presidential candidacy of Henry A. Wallace.