Originally elected as an independent, Byblow joined the Yukon New Democratic Party caucus on September 16, 1981. He retired in 1985, and was succeeded by Jim McLachlan. He was re-elected to the legislature in the 1989 election, and served until 1992. He later served as an executive assistant to NDP leader Piers McDonald, and both were implicated in a conflict of interest allegation,[2] although both McDonald and Byblow were eventually cleared.
After retiring from politics, Byblow purchased the Capital Hotel in downtown Whitehorse in 1997, and worked as a hotelier until selling the hotel in early 2008.[3] Byblow died on February 11, 2020.[4][5]