Why did popular support for the Federalist decline after the Hartford Convention

Even before the War of 1812, the Federalists were already on a decline. While the majority of the United states wanted to go to war with Britain and supported peace with the French, the Federalist wanted the exact opposite. The Federalist were supportive of making peace with the British and this caused them to lose favor in the eye of the public. Britain's interference with trade and their influence on Native Americans to attack settlers made Americans feel like the Federalist weren't working for the people. The people of the United States also felt that the Federalist favored the upper class, which caused their popularity to diminish. The Hartford Convention was said to be the end of the party. The Federalist met on December 14, 1815, to discuss the idea that New England would separate from the United States. Congress did not support this idea and soon the Federalists disappeared.