The Republican Party, also commonly called the GOP (abbreviation for Grand Old Party), is one of the two major contemporary political parties in the United States, the other being the Democratic Party. Founded by anti-slavery activists in 1854, it dominated politics nationally for most of the period from 1860 to 1932. There have been 18 Republican presidents, the first being Abraham Lincoln, serving from 1861 to 1865, and the most recent being George W. Bush, serving from 2001 to 2009. The most recent Republican presidential nominee, and currently the president-elect, is Donald Trump who will be inaugurated into the office of US President on January 20th, 2017.
This is a list of the official state and territorial party organizations of the Republican Party.