He became Speaker after his predecessor, George Black, suffered a nervous breakdown in the summer of 1934, and was unfit to preside when the House of Commons of Canada reconvened in January 1935.
As the Deputy Speaker was ill, Bennett approached Bowman, a backbencher, hours before the House was to convene, about becoming Speaker for the rest of the Parliamentary term.
Bowman had little experience as Speaker and had to deal with a tense, pre-election session. Members of Parliament on all sides of the House felt that Bowman did well in the job. But when the 1935 general election was held in the fall, Bowman lost his seat by a large margin.
He returned to his law practice in Dauphin and failed in his attempt to regain his seat in the 1940 election.