1966 United States Senate election in Oregon

1966 United States Senate election in Oregon

← 1960 November 6, 1966 1972 →
 
Nominee Mark Hatfield Robert B. Duncan
Party Republican Democratic
Popular vote 354,391 330,374
Percentage 51.75% 47.25%

County results

Hatfield:      50-60%      60-70%      70-80%

Duncan:      50–60%

U.S. senator before election

Maurine Neuberger
Democratic

Elected U.S. Senator

Mark Hatfield
Republican

The 1966 Oregon United States Senate election was held on November 6, 1966 to select the U.S. Senator from the state of Oregon. Incumbent Senator Maurine Brown Neuberger did not seek re-election. Held during the escalation of United States involvement of the Vietnam War, the race was between Republican candidate and incumbent Governor of Oregon Mark Hatfield, who opposed the war, and Democratic congressman Robert B. Duncan, who supported the war. In an unusual move, Oregon's other Senator, Democrat Wayne Morse, who also opposed the war, crossed party lines to endorse Hatfield, who won in a close election, his first of five terms in the United States Senate.