Answer:
The Republicans were the liberal party while the Democrats were the Conservatives.
Explanation:
Liberalism is a movement that seeks the protection of the rights of individuals within a government. From 1896 to 1932 (this period was marked by the Fourth Party System) the Republicans dominated American politics with the exception of the Democrats' eight years rule that began in 1912.
Even though the Republicans were known for their support of big business, within this period, they promoted liberal ideas by promoting the rights of workers, regulating big business, and supporting labor unions. Republicans, William McKinley, Theodore Roosevelt, Robert LaFollette, and William Howard Taft were known for their progressive and liberal campaigns.