How were the Anti-Masons connected to the rise of the Whig Party?

The Anti-Masonic Movement in the United States, fueled by suspicion of the secret fraternal order of Freemasons, led to the creation of the Anti-Masonic Party. This party was the first American third party and the first to hold a national nominating convention and present a platform of principles.1

The movement gained traction after the mysterious disappearance of William Morgan in 1826, who was rumored to have been murdered by Masons for revealing their secrets. Anti-Masonic candidates found success in state and local elections, and the party nominated William Wirt for president in 1832.1

While the Anti-Masonic Party declined after the 1832 election, much of its reformist energy was absorbed by the newly formed Whig Party. The Whig Party, organized around opposition to the perceived executive tyranny of Andrew Jackson, brought together various groups, including former members of the Anti-Masonic Movement. By the late 1830s, most Anti-Masonic politicians had joined the Whigs.231