John McCain carried Idaho R+25.4.

Barack Obama (D) vs John McCain (R) in Idaho, 2008. The state ran 32.6 points more Republican than the nation (D+7.3 nationally). A US Senate contest shared the 2008 ballot here.

Nominees: Barack Obama (D) · John McCain (R)

akashic

Idaho result

656,390 votes counted

Obama (D)

236,440

36.0%

McCain (R)

403,012

61.4%

All others

16,938

2.6%

Margin

R+25.4

akashic

2008 presidential election

Idaho, 2008

McCainR+25.4

How it voted

Share of the 2008 vote

John McCain ✓Republican	61.4%	403,012
Barack ObamaDemocratic	36.0%	236,440
OtherAll other candidates	2.6%	16,938

D+60

R+60

44 counties, each filled by 2008 D-vs-R margin. Hover any county for its result.

akashic

Idaho's presidential margins

1892–2024, the 2008 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%

akashic

County results — 2008

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

akashic

County	Won	Margin	Democratic	Republican	Total
Ada County	R	−6.1%	82,236	93,328	180,760
Adams County	R	−34.0%	728	1,517	2,320
Bannock County	R	−13.0%	14,792	19,356	35,105
Bear Lake County	R	−63.7%	502	2,377	2,943
Benewah County	R	−29.8%	1,407	2,646	4,164
Bingham County	R	−45.5%	4,424	12,230	17,155
Blaine County	D	+33.2%	6,947	3,439	10,571
Boise County	R	−31.6%	1,240	2,433	3,773
Bonner County	R	−16.9%	7,840	11,145	19,547
Bonneville County	R	−43.0%	11,417	29,334	41,703
Boundary County	R	−33.7%	1,484	3,078	4,733
Butte County	R	−52.3%	318	1,056	1,410
Camas County	R	−38.0%	187	422	618
Canyon County	R	−35.2%	20,147	42,752	64,246
Caribou County	R	−63.7%	553	2,656	3,302
Cassia County	R	−63.5%	1,332	6,309	7,842
Clark County	R	−64.3%	64	305	375
Clearwater County	R	−34.8%	1,211	2,569	3,906
Custer County	R	−46.0%	611	1,694	2,352
Elmore County	R	−36.4%	2,591	5,665	8,436
Franklin County	R	−71.9%	600	4,246	5,073
Fremont County	R	−61.8%	1,065	4,700	5,880
Gem County	R	−43.0%	2,166	5,585	7,947
Gooding County	R	−42.2%	1,489	3,765	5,391
Idaho County	R	−47.2%	2,017	5,895	8,210
Jefferson County	R	−66.1%	1,641	8,540	10,441
Jerome County	R	−45.3%	1,794	4,897	6,847
Kootenai County	R	−26.3%	22,120	38,387	61,932
Latah County	D	+6.8%	9,195	7,988	17,714
Lemhi County	R	−45.7%	1,061	2,938	4,105
Lewis County	R	−44.1%	479	1,275	1,804
Lincoln County	R	−36.7%	545	1,232	1,870
Madison County	R	−72.8%	1,627	11,131	13,057
Minidoka County	R	−50.2%	1,630	5,087	6,890
Nez Perce County	R	−18.1%	7,123	10,357	17,823
Oneida County	R	−62.1%	381	1,724	2,162
Owyhee County	R	−51.3%	944	3,024	4,058
Payette County	R	−41.5%	2,415	5,988	8,613
Power County	R	−25.6%	1,027	1,754	2,842
Shoshone County	R	−7.6%	2,521	2,953	5,666
Teton County	D	+0.8%	2,302	2,263	4,658
Twin Falls County	R	−36.7%	8,621	19,032	28,344
Valley County	R	−6.9%	2,405	2,772	5,296
Washington County	R	−42.8%	1,241	3,168	4,506