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About John Otho Chapman
- John Otho "Jack" Chapman (August 19, 1931 – March 6, 2011) was a power plant supervisor and political figure in Saskatchewan.
- He represented Estevan from 1980 to 1982 in the Legislative Assembly of Saskatchewan as a New Democratic Party (NDP) member. He was born in Estevan, Saskatchewan and worked 35 years for SaskPower as a power engineer and plant supervisor.
- Chapman also served on the board for Luther College.
- He defeated Grant Devine in a 1980 by-election to win a seat in the provincial assembly after Robert Larter resigned from the assembly, citing health reasons.
- He was defeated by Devine when he ran for reelection in 1982.
- He died in 2011.
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