Definition of turnbuckle. : a device that usually consists of a link with screw threads at both ends, that is turned to bring the ends closer together, and that is used for tightening a rod or stay.
Such splintering had not yet led to formal party organization, but later the faction led by Andrew Jackson would evolve into the Democratic Party, while the factions led by John Quincy Adams and Henry Clay would become the National Republican Party and later the Whig Party.
The Republican Party was founded in 1854 by a group of renegade Democrats, Whigs, and political independents who opposed the expansion of Slavery into new U.S. territories and states. What began as a single-issue, independent party became a major political force in the United States. Six years after the new party was formed, Republican nominee Abraham Lincoln won the U.S. presidential election.