Fourth Party System

[File:USPresResults1896 1928.png|thumb|right|500px|United States Presidential results between 1896 and 1928 (with the exception of 1912) by U.S. state.
Extremely dark blue: Voted Democratic 8 out of 8 times/elections
Dark blue: Voted Democratic 7 out of 8 times (no U.S. states fit into this category)
Blue: Voted Democratic 6 out of 8 times
Light blue: Voted Democratic 5 out of 8 times
Green: Voted for each party 4 out of 8 times
Pink: Voted Republican 5 out of 8 times
Red: Voted Republican 6 out of 8 times
Dark red: Voted Republican 7 out of 8 times
Very dark red: Voted Republican 8 out 8 times.]] The Fourth Party System is the term used in political science and history for the period in American political history from about 1896 to 1932 that was dominated by the Republican Party, excepting the 1912 split in which Democrats held the White House for eight years. American history texts usually call it the Progressive Era. The concept was introduced under the name "System of 1896" by E.E. Schattschneider in 1960, and the numbering scheme was added by political scientists in the mid-1960s.