page_title: 1978 United States Senate election in Oregon
hierarchical_section_title: 1978 United States Senate election in Oregon
context_page_description: The 1978 United States Senate election in Oregon took place on November 7, 1978. Incumbent Republican Senator Mark Hatfield was re-elected to a third term in office, defeating Democrat Vernon Cook.
context_section_description: The 1978 United States Senate election in Oregon took place on November 7, 1978. Incumbent Republican Senator Mark Hatfield was re-elected to a third term in office, defeating Democrat Vernon Cook.
caption: County Results 
  
  Hatfield:      50-60%      60-70%      70–80% 
  Cook:      50–60%