The Farmers' Alliances agitated for railroad regulation, tax reform, and unlimited coinage of silver and attempted to influence the established political parties. Growth was so rapid, however, that interest in a third party began to increase; in 1891 delegates from farm and labor organizations met in Cincinnati. No decision was made to form a political party, but when the Republican and Democratic parties both straddled the currency question at the 1892 presidential conventions, a convention was held at Omaha, and the Populist party was formed (1892).