MP defections: 1832 to 2014

MP defections, 1832-2014 19th Century 1832 1835 1837 1841 1847 1852 1857 1859 1959 1964 1966 1970 1974 (F) 1974 (O) 1979 1892 1895 While actual numbers are hard to 20th Century calculate, around 20 remaining members of the Peelite faction of Winston Churchill 1900 the Conservatives joined the newly formed Liberal Party 1906 1910 (J) 1910 (D) 1865 1868 1874 1880 1885 1886 1918 1922 1923 1924 1929 1931 1935 1945 1983 1987 1992 1997 21st Century 2001 2005 2010 1950 1951 1955 Major parties Minor parties/Northern Ireland parties Original party Whig/Liberal/Liberal Democrat Liberal Unionist Northern Ireland parties (republican) UKIP Tory/Conservative SDP New Party Northern Ireland parties (unionist) New party Labour All other minor parties Source: Wikipedia Does not include party mergers, factions within parties, or party splits over National/Coalition Governments. Nor does it include MPs withdrawing from a party to become an independent or party-affiliated independent. @mattsmithetc Beginning year of Parliament