Three national presidential nominating conventions were held in three separate buildings in or near the complex between 1888 and 1904 including the 1888 Democratic National Convention , 1896 Republican National Convention , and 1904 Democratic National Convention . In addition to the 1904 Democratic convention , it was used as a large venue for other conventions and congresses during the 1904 World 's Fair
1896 Republican National Convention
1896 Republican National Convention
St. Louis Exposition and Music Hall