1958 United States Senate election in Missouri

1958 United States Senate election in Missouri
	County results; Symington: 50–60% 60–70% 80–90% >90% ; Palmer: 50–60% 60–70%
U.S. senator before election; Stuart Symington; Democratic	Elected U.S. Senator ; Stuart Symington; Democratic

The 1958 United States Senate election in Missouri was held on November 4, 1958.

Incumbent Senator Stuart Symington was re-elected to a second term in office.

Democratic primary

1958 Democratic U.S. Senate primary^[1]
Party		Candidate	Votes	%
	Democratic	Stuart Symington (incumbent)	365,470	92.13%
	Democratic	Lawrence Hastings	19,954	5.03%
	Democratic	Lamar Dye	11,262	2.84%
Total votes			396,686	100.00%

Homer Cotton, nominee for Missouri's 8th congressional district in 1938
Herman Grosby, perennial candidate
Hazel Palmer, attorney, President of the Business and Professional Women's Foundation, and daughter of former U.S. Representative John William Palmer
William McKinley Thomas, perennial candidate

Hazel Palmer became the first woman ever nominated for United States Senate in Missouri.

Primary results by county:

Palmer

Thomas

Cotton

1958 Republican U.S. Senate primary^[2]
Party		Candidate	Votes	%
	Republican	Hazel Palmer	61,481	44.63%
	Republican	William McKinley Thomas	36,438	26.45%
	Republican	Homer Cotton	27,023	19.62%
	Republican	Herman G. Grosby	12,818	9.31%
Total votes			137,760	100.00%

General election results^[3]
Party		Candidate	Votes	%	±%
	Democratic	Stuart Symington (incumbent)	780,083	66.45%	12.46
	Republican	Hazel Palmer	393,847	33.55%	12.39
Total votes			1,173,930	100.00%