Theodore Roosevelt carried Idaho R+40.4.

Alton B. Parker (D) vs Theodore Roosevelt (R) in Idaho, 1904. The state ran 20.7 points more Republican than the nation (R+19.7 nationally).

Nominees: Alton B. Parker (D) · Theodore Roosevelt (R)

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Idaho result

72,586 votes counted

Parker (D)

18,480

25.5%

Roosevelt (R)

47,792

65.8%

All others

6,314

8.7%

Margin

R+40.4

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1904 presidential election

Idaho, 1904

RooseveltR+40.4

How it voted

Share of the 1904 vote

Theodore Roosevelt ✓Republican	65.8%	47,792
Alton B. ParkerDemocratic	25.5%	18,480
OtherAll other candidates	8.7%	6,314

D+60

R+60

21 counties, each filled by 1904 D-vs-R margin. Hover any county for its result.

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Idaho's presidential margins

1892–2024, the 1904 contest in context

Idaho's presidential margins

Year	Margin (D minus R)
1892	−44.2%
1896	+56.8%
1900	+3.8%
1904	−40.4%
1908	−16.9%
1912	+1.1%
1916	+10.9%
1920	−31.3%
1924	−30.8%
1928	−29.3%
1932	+20.4%
1936	+29.8%
1940	+9.1%
1944	+3.5%
1948	+2.7%
1952	−31.0%
1956	−22.4%
1960	−7.6%
1964	+1.8%
1968	−26.1%
1972	−38.2%
1976	−22.8%
1980	−41.3%
1984	−46.0%
1988	−26.1%
1992	−13.6%
1996	−18.5%
2000	−39.5%
2004	−38.1%
2008	−25.4%
2012	−31.9%
2016	−31.8%
2020	−30.8%
2024	−36.5%

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County results — 1904

21 counties; every row links to the county's full page.

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County	Won	Margin	Democratic	Republican	Total
Ada County	R	−47.0%	1,466	4,536	6,525
Bannock County	R	−42.8%	1,063	2,826	4,121
Bear Lake County	R	−33.1%	769	1,538	2,321
Bingham County	R	−51.3%	890	3,186	4,476
Blaine County	R	−20.7%	775	1,225	2,173
Boise County	R	−22.1%	639	1,053	1,870
Canyon County	R	−45.0%	1,025	3,172	4,766
Cassia County	R	−49.8%	346	1,105	1,524
Custer County	R	−6.9%	429	496	967
Elmore County	R	−14.3%	433	593	1,117
Fremont County	R	−47.3%	1,278	3,869	5,483
Idaho County	R	−30.2%	1,381	2,731	4,468
Kootenai County	R	−48.4%	1,178	4,165	6,166
Latah County	R	−50.1%	940	3,276	4,667
Lemhi County	R	−15.7%	564	786	1,418
Lincoln County	R	−42.2%	262	688	1,009
Nez Perce County	R	−36.0%	1,696	3,956	6,281
Oneida County	R	−43.2%	906	2,339	3,320
Owyhee County	R	−22.4%	393	663	1,206
Shoshone County	R	−46.2%	1,116	3,695	5,588
Washington County	R	−30.9%	931	1,894	3,120