1958 United States Senate election in Montana

The 1958 United States Senate election in Montana took place on November 4, 1958. Incumbent United States Senator Mike Mansfield, who was first elected to the Senate in 1952, ran for re-election. Mansfield won the Democratic primary comfortably, and moved on to the general election, where he was opposed by Lou W. Welch, a millworker and the Republican nominee. In contrast to the close campaign in 1952, Mansfield defeated Welch in a landslide and won his second term in the Senate easily.

1958 United States Senate election in Montana

November 4, 1958

Nominee Mike Mansfield Lou Welch Party Democratic Republican Popular vote 174,910 54,573 Percentage 76.22% 23.78%

U.S. senator before election Mike Mansfield Democratic Elected U.S. Senator Mike Mansfield Democratic

Democratic primary

Candidates

• Mike Mansfield, incumbent United States Senator
• J. M. Nickey
• Thomas G. Stimatz, former State Representative

Results

Democratic Party primary results[1]

Party		Candidate	Votes	%
	Democratic	Mike Mansfield (inc.)	97,207	91.72
	Democratic	J. M. Nickey	4,710	4.44
	Democratic	Thomas G. Stimatz	4,061	3.83
Total votes			105,978	100.00

Republican primary

Candidates

• Lou W. Welch, millworker
• Blanche Anderson

Results

Republican Primary results[1]

Party		Candidate	Votes	%
	Republican	Lou W. Welch	19,860	50.30
	Republican	Blanche Anderson	19,624	49.70
Total votes			39,484	100.00

General election

Results

United States Senate election in Montana, 1958[2]

Party		Candidate	Votes	%	±%
	Democratic	Mike Mansfield (inc.)	174,910	76.22%	+25.47%
	Republican	Lou W. Welch	54,573	23.78%	-24.77%
Majority			120,337	52.44%	+50.25%
Turnout			229,483
	Democratic hold		Swing

See also

• 1958 United States Senate elections

References

1. "Report of the Official Canvass of the Vote Cast at the Primary Election Held in the State of Montana, June 3, 1958" (PDF). Montana Secretary of State. Archived from the original (PDF) on December 28, 2013. Retrieved July 2, 2014.
2. "Statistics of the Presidential and Congressional Election of November 4, 1958" (PDF). Clerk of the United States House of Representatives. Retrieved July 4, 2014.