The 1856 American National Convention nominated former President Fillmore for president in the 1856 presidential election ; Fillmore also received the presidential nomination at the sparsely attended 1856 Whig National Convention . Many supporters of the American Party continued to identify primarily as Whigs , and Fillmore minimized the issue of nativism , instead attempting to use his campaign as a platform for unionism and a revival of the Whig Party . He finished in second in several states in the South and carried just a single state in the 1856 election , confirming that the Republican Party , rather than the American Party , would replace the Whigs as the main opposition to the Democrats . The American Party collapsed after the 1856 elections , and many Southern officeholders who refused to join the Democratic Party organized themselves into the Opposition Party
1856 American National Convention
1856 American National Convention
Constitutional Union Party (United States)