The Conservative Party in the United States refers to various state parties that have no connection with one another that support conservatism in the United States.
There never has been an active national political party that used the name "Conservative."
The Conservative Party USA is a 527 organization.
The American Conservative Party was formed in 2008 and then decommissioned in 2016. It does not claim any members who ran for or held political office.
In the late 1830s and early 1840s, state-level candidates were put forward on a Conservative Party line, although they were not successful. Some of these candidates, such as Elisha Phelps, had previously been associated with the National Republican Party.
A conservative party in Illinois was established in 2018, largely to support State Senator Sam McCann's run for governor.
Voters in New Jersey may choose to register in the New Jersey Conservative Party (CP-NJ). As of February 2019 there are 10,610 registered members.
The Conservative Party of New York State, founded in 1962. New York state's party has elected two men to the United States Congress:
See Conservative Party of Virginia (1965-1969).
In the Reconstruction era after the Civil War, former Whigs in several Southern states formed parties with the "Conservative" or "Democratic-Conservative" name. Eventually they all merged into the Democratic Party, among them:
Entities organized under section 527 of the tax code are considered “political organizations,” defined generally as a party, committee or association that is organized and operated primarily for the purpose of influencing the selection, nomination or appointment of any individual to any federal, state or local public office, or office in a political organization. All political committees that register and file reports with the FEC are 527 organizations, but not all 527 organizations are required to file with the FEC. Some file reports with the Internal Revenue Service (IRS).