Baker was Assistant General Secretary of the
Union of Post Office Workers, and head of their research department. He unsuccessfully contested the
1918 and
1922 general elections in the
Harborough division of Leicestershire. At the
1923 general election he stood in
Bristol East, where he won the seat from the
National Liberal MP
Harold Morris. Baker was re-elected in
1924 and
1929, and died in office in December 1930, aged 54. The resulting
by-election in January 1931 was won by the Labour candidate
Stafford Cripps. ==References==