The 1970 United States Senate election in North Dakota was held November 3, 1970. The incumbent, North Dakota Democratic NPL Party Senator Quentin Burdick, was re-elected to his third term, defeating Republican candidate Thomas S. Kleppe, who later became the United States Secretary of the Interior.^[1]

1970 United States Senate election in North Dakota

← 1964 November 3, 1970 1976 →

Nominee Quentin Burdick Thomas Kleppe Party Democratic–NPL Republican Popular vote 134,519 82,996 Percentage 61.27% 37.80%

County results Burdick:      50-60%      60-70%      70-80% Kleppe:      50-60%      60-70%

U.S. senator before election Quentin Burdick Democratic Elected U.S. Senator Quentin Burdick Democratic

Only Burdick filed as a Dem-NPLer, and the endorsed Republican candidate was Thomas S. Kleppe, who was finishing his second and final term as a Representative for North Dakota's second congressional district. Burdick and Kleppe won the primary elections for their respective parties.

One independent candidate, Russell Kleppe, also filed before the deadline.