U.S. Representative Margaret Chase Smith defeated the two most recent Governors of Maine, Horace Hildreth and Sumner Sewall, in the Republican primary. In the general election, Smith resoundingly defeated Democrat Adrian Scolten of Portland.
Smith was the first woman ever elected to a full term in the U.S. Senate without first being appointed.[a] Smith's election also made her the first woman to serve in both house of the United States Congress, as well as the first woman to represent the state of Maine in the Senate.
- Albion P. Beverage
- Horace Hildreth, Governor of Maine since 1945
- Sumner Sewall, former Governor of Maine from 1941 to 1945
- Margaret Chase Smith, U.S. Representative from Skowhegan
|Republican||Margaret Chase Smith||63,786||51.90%|
- Adrian Scolten
Scolten was unopposed for the Democratic nomination.
|Republican||Margaret Chase Smith (inc.)||159,182||71.30%||4.63|
- "Senator Margaret Chase Smith (1897–1995)". University of Maine.
- "ME US Senate- R Primary Race - Jun 21, 1948". Our Campaigns. Retrieved 19 June 2020.
- "ME US Senate- D Primary Race - Jun 21, 1948". Our Campaigns. Retrieved 19 June 2020.
- "ME US Senate Race - September 13, 1948". Our Campaigns. Retrieved 19 June 2020.
- Hattie Caraway of Arkansas was elected to two terms in the Senate, but she had been appointed first to succeed her dead husband and was an incumbent in each of her elections. In 1938, Gladys Pyle was elected to represent South Dakota in the U.S. Senate for 55 days to complete the term of Herbert Hitchcock.