They had been losing support for a while and were only strong in New England. The final blow came with the War of 1812 where the United States went to war against England, which the Federalist Party opposed. The Federalist Party always favored England over France as an ally, opposite of the Democratic-Republicans. Added to that, there was a meeting of New England delegates that discussed seceding from the union. Although this did not happen, it made the Federalist Party seem unpatriotic and lose almost all of its support.