PolitiFinder

1978 Oregon U.S. Senate Election

Oregon · 2 candidates · See every 1978 U.S. Senate race

Who won the 1978 Oregon U.S. Senate Election?

Mark O. Hatfield won the 1978 Oregon U.S. Senate Election. Mark O. Hatfield received 550,165 popular votes (61.64%). The main challenger was Vern Cook (38.28%).

See the full head-to-head between Hatfield and Cook

Hatfield +23.4 pts · won by 208,549 votes
Mark O. HatfieldRepublicanWINNER61.64%
550,165 votes
Vern CookDemocratic38.28%
341,616 votes
Popular-vote totals for U.S. Senate elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified August 15, 2026.