Herbert Hoover carried Idaho R+29.3.

Al Smith (D) vs Herbert Hoover (R) in Idaho, 1928. The state ran 11.8 points more Republican than the nation (R+17.5 nationally).

Nominees: Al Smith (D) · Herbert Hoover (R)

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Idaho result

151,541 votes counted

Smith (D)

52,926

34.9%

Hoover (R)

97,322

64.2%

All others

1,293

0.9%

Margin

R+29.3

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1928 presidential election

Idaho, 1928

HooverR+29.3

How it voted

Share of the 1928 vote

Herbert Hoover ✓Republican	64.2%	97,322
Al SmithDemocratic	34.9%	52,926
OtherAll other candidates	0.9%	1,293

D+60

R+60

44 counties, each filled by 1928 D-vs-R margin. Hover any county for its result.

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Idaho's presidential margins

1892–2024, the 1928 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 — 1928

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

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County	Won	Margin	Democratic	Republican	Total
Ada County	R	−44.4%	3,921	10,279	14,308
Adams County	R	−16.2%	374	521	905
Bannock County	R	−7.0%	4,602	5,297	9,953
Bear Lake County	R	−22.2%	1,146	1,802	2,955
Benewah County	R	−16.5%	958	1,343	2,338
Bingham County	R	−29.0%	1,778	3,236	5,035
Blaine County	R	−4.2%	780	849	1,634
Boise County	R	−14.4%	389	521	919
Bonner County	R	−27.8%	1,603	2,861	4,524
Bonneville County	R	−20.8%	2,110	3,218	5,336
Boundary County	R	−24.8%	607	1,015	1,646
Butte County	R	−24.1%	301	493	797
Camas County	R	−28.0%	230	413	653
Canyon County	R	−53.1%	2,187	7,293	9,619
Caribou County	R	−23.5%	291	471	766
Cassia County	R	−41.0%	994	2,388	3,402
Clark County	R	−50.0%	129	388	518
Clearwater County	R	−16.5%	852	1,195	2,074
Custer County	R	−11.2%	516	647	1,171
Elmore County	R	−20.6%	739	1,125	1,877
Franklin County	R	−17.9%	1,193	1,718	2,926
Fremont County	D	+7.2%	1,933	1,674	3,619
Gem County	R	−43.3%	646	1,656	2,332
Gooding County	R	−38.3%	821	1,852	2,689
Idaho County	R	−11.1%	1,676	2,099	3,812
Jefferson County	R	−10.6%	1,350	1,671	3,028
Jerome County	R	−45.6%	759	2,050	2,831
Kootenai County	R	−41.5%	2,020	4,973	7,114
Latah County	R	−44.8%	1,681	4,472	6,225
Lemhi County	R	−15.1%	837	1,139	1,994
Lewis County	R	−18.0%	793	1,146	1,964
Lincoln County	R	−41.3%	358	865	1,227
Madison County	R	−15.2%	1,228	1,670	2,900
Minidoka County	R	−23.4%	1,132	1,832	2,996
Nez Perce County	R	−22.9%	2,535	4,054	6,644
Oneida County	R	−7.4%	1,020	1,184	2,211
Owyhee County	R	−26.1%	533	918	1,476
Payette County	R	−54.7%	621	2,203	2,890
Power County	R	−13.2%	653	852	1,508
Shoshone County	R	−19.9%	2,430	3,648	6,117
Teton County	R	−36.7%	348	753	1,103
Twin Falls County	R	−46.3%	2,471	6,791	9,338
Valley County	R	−30.7%	407	774	1,195
Washington County	R	−33.6%	974	1,973	2,972