The riding has existed twice, from 1905 to 1909, and again from 1921 to 1971. The Lethbridge electoral district was founded as one of the original 25 electoral districts contested in the
1905 Alberta general election after Alberta became a province in September 1905. The electoral district was a continuation of the
Lethbridge electoral district that had elected a single member to the
Legislative Assembly of the North-West Territories from 1891 to 1905. In 1905, the Lethbridge electoral district covered a large patch of southern Alberta. It was broken into
Lethbridge District and
Lethbridge City in 1909. After
Lethbridge District was broken up into
Taber and
Little Bow in 1913,
Lethbridge City was all that remained, using the Lethbridge name; in 1921 the Lethbridge district was reformed after City was dropped from the name. From 1924 to 1956, the district used
instant-runoff voting to elect its MLA. The Lethbridge electoral district was abolished in the 1971 electoral district re-distribution, and the territory was formed into
Lethbridge-East and
Lethbridge-West electoral districts. The riding was named after the
Southern Alberta city of
Lethbridge.
Representation Liberal Leverett George DeVeber was elected as the first representative for the Lethbridge electoral district in 1905, DeVeber had previously held the Lethbridge seat in the Northwest Territories Legislature from 1898 to 1905. DeVeber's time as the representative was short as he was appointed to the
Senate on March 8, 1906. He was followed by
William Charles Simmons and
Donald McNabb. ==Election results==