The GOP was usually dominant over the Democrats during the Third Party System (1850s–1890s). However, by 1890 the Republicans had agreed to the Sherman Antitrust Act and the Interstate Commerce Commission in response to complaints from owners of small businesses and farmers. The high McKinley Tariff of 1890 hurt the party and the Democrats swept to a landslide in the off-year elections, even defeating McKinley himself. The Democrats elected Grover Cleveland in 1884 and 1892. The election of William McKinley in 1896 was marked by a resurgence of Republican dominance that lasted (except for 1912 and 1916) until 1932. McKinley promised that high tariffs would end the severe hardship caused by the Panic of 1893 and that Republicans would guarantee a sort of pluralism in which all groups would benefit.