Rump party

A rump party is a political party that is formed by the remaining body of supporters and leaders who do not support a breakaway group that merges with another party, or forms a new party. The rump party can have the name of the original party, or a new name.

Examples:
 * The pro-protectionism Conservative Party in the UK after the breakaway of the free trade Peelite faction in 1846 over the repeal of the corn laws.
 * Conservative Party of British Columbia
 * United Labour Party in New Zealand which had a remnant made up of moderates who did not join the new, more radical, Social Democratic Party.
 * Liberal Party (UK, 1989)
 * Centre Party (Germany)
 * National Party (South Africa) under leadership of DF Malan after formation of the United Party.
 * New National Party (South Africa), the new name of what remained of National Party under the leadership of FW de Klerk and Marthinus van Schalkwyk.
 * The pro-Petre Roman wing of the National Salvation Front which transformed in 1993 into the Democratic Party
 * Party of the Democratic Left (Slovakia, 2005)
 * Progressive Canadian Party, under Ernie Schreiber and later Sinclair Stevens, the remnants of the former Progressive Conservative Party of Canada that opposed the merger with the Canadian Alliance.
 * Progressive Conservative Party of Saskatchewan
 * The Rassemblement-UMP (Gathering-Union for a Popular Movement) was an ephemeral French legislative group, led by former Prime Minister François Fillon, which split from the Union for a Popular Movement on November 2012 after the internal contestation which followed the election of the party's president. Created on November 27, 2012, this dissident group was reintegrated with the UMP's parliamentary group after negotiations between the two rivals on January 16, 2013.
 * Saskatchewan Liberal Party
 * Social Democratic Party (UK, 1990–present)
 * Social Democratic Party of Hungary
 * Social Democratic Party (Japan)

Communist rump parties:
 * Brazilian Communist Party
 * Communist Party of Britain
 * Communist Party of Finland (1994)
 * Communist Party of Germany (1990)
 * Hungarian Workers' Party