Beaver River's first MLA was LiberalWilfrid Gariépy, a Quebec-born settler whose residency would be the subject of controversy toward the end of his second term. He did not run for a third, choosing instead to return to Trois-Rivières. Liberal Joseph Dechêne won the riding in 1921, but would go on to defeat in 1926. He later became MLA for neighbouring St. Paul.
John Delisle picked Beaver River up for the United Farmers of Alberta, serving only one term. In the 1930 election, a judicial recount declared him narrowly defeated by Liberal Henry Dakin, who would also serve only one term.
In the 1935 Social Credit sweep, Lucien Maynard won Beaver River by a landslide. He easily won re-election twice more, retiring for the 1948 election.
Social Credit kept the riding, with Harry Lobay narrowly beating his Liberal challenger and serving out the riding's last term. It was replaced in 1952, but Lobay would go on to serve another term as MLA for the new riding of Lac La Biche.
Source: "Beaver River Official Results 1948 Alberta general election". Alberta Heritage Community Foundation. Retrieved May 21, 2020. Instant-runoff voting requires a candidate to receive a plurality (greater than 50%) of the votes. As no candidate received a plurality of votes, the bottom candidate was eliminated and their 2nd place votes were applied to both other candidates until one received a plurality
Overall swing is based on first count. Second-round swing reflects increase in vote share from the first count.
