Career
He was a surgeon and physician by career. After winning successive terms in the 1972, 1974 and 1979 federal elections, Yewchuk left national politics in 1980 and did not campaign in that year"s federal elections. He served four terms from the 28th to 31st Canadian Parliaments.
In the 1986 British Columbia election he ran as one of the two Social Cr candidates in the riding of Victoria, the Victoria riding returned two MLAs at the time.
He came fourth with 19.71% of the vote. In 2005 he sought the Conservative nomination in Edmonton Centre but lost to Laurie Hawn who went on to defeat Anne McLellan.