[1] He represented the electoral district of Mayo-Tatchun as a member of the Yukon New Democratic Party caucus from 2011 to 2016.
Prior to elected office, Tredger served as president of both the Association of Yukon School Administrators and the Yukon Teachers Association.
[2] During his term in office, Tredger served as the NDP critic for education, energy, mines and resources, and rural issues.
[3] He was defeated by Liberal candidate Don Hutton in the 2016 Yukon general election.
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