The Republican Party, commonly referred to as the GOP (abbreviation for Grand Old Party), is one of the two major contemporary political parties in the United States, the other being its historic rival the Democratic Party.
Founded by anti-slavery activists in 1854, the GOP dominated politics nationally and in most of the northern U.S. for most of the period between 1860 and 1932. There have been 18 Republican U.S. presidents, the first being Abraham Lincoln, who served from 1861 until his assassination in 1865, and the most recent being George W. Bush, who served two full four-year terms 2001 to 2009. The most recent Republican presidential nominee was former Massachusetts governor Mitt Romney who lost in 2012. More: en.wikipedia.org.