From 1885 to 1935, the constituency returned mostly
Conservative MPs, with its most notable MP being Conservative Party leader
Bonar Law from 1911 to 1918, when property qualifications for the vote were abolished. Bonar Law would later serve as UK prime minister from 1922 to 1923, though at that point he no longer represented Bootle in the House of Commons.
James Burnie of the
Liberal Party held the seat from 1922 to 1924, and the seat was briefly held by
John Kinley from the Labour Party from 1929 to 1931 and became a Conservative–Labour
marginal seat in the 1930s when the mainstream Labour party formed the
National Government. The
Labour Party has held it continuously since the
1945 general election; this period saw two decades of steep decline in the profitability of
Liverpool Docks, manufacturing and
shipbuilding, which employed many constituents. At the three general elections from
1997, Bootle was the
safest seat for any party in the United Kingdom by percentage of majority. In 1990, two
by-elections were held in Bootle. The first followed the death of
Allan Roberts on 21 February, and was held on 24 May. Jack Holmes, the candidate of the continuing
Social Democratic Party (representing the faction of the party which did not merge with the
Liberal Democrats) was beaten by
Screaming Lord Sutch of the
Official Monster Raving Loony Party, contributing to the end of the SDP. The victorious Labour candidate,
Michael Carr unexpectedly died on 20 July 1990 after just 57 days in office. The second by-election, held on 8 November 1990, was won by the Labour candidate,
Joe Benton. Benton retained Bootle at the next four general elections with large majorities. At the
2005 general election, the seat was the safest seat by percentage of majority and had the highest winning share of the vote. In June 2014, Benton announced that he would retire at the 2015 general election. The 2015 result made the seat the fifth-safest of Labour's 232 seats by percentage of majority (with a winning vote share of 74.5% and a majority of 63.6%). Bootle remained a safe seat into the 2020s, becoming the safest seat for Labour by this metric in
2024 (despite a decrease of the vote share by 10.7%) with a winning vote share of 68.7%; this gave Labour a 56.5% majority over
Reform UK. ==Boundaries==