Idaho — 1948 presidential election
Recent presidential results
Akashicstate1948 presidential electionIdaho · PresidentTrumanD+2.7
How it voted
Share of the 1948 vote
| Harry S. Truman ✓Democratic | 50.0% | 107,370 |
|---|---|---|
| Thomas E. DeweyRepublican | 47.3% | 101,514 |
| OtherAll other candidates | 2.8% | 5,932 |
1948presidential margin
D+60R+60
44 counties, each filled by 1948 D-vs-R margin. Hover any county for its result.
Idaho cast 4 electoral votes this cycle.
County-level results (44 counties) — table
| County | Winner | Margin |
|---|---|---|
| Ada County, ID | Republican | R+13.9 |
| Adams County, ID | Democratic | D+3.5 |
| Bannock County, ID | Democratic | D+26.3 |
| Bear Lake County, ID | Democratic | D+2.3 |
| Benewah County, ID | Democratic | D+20.2 |
| Bingham County, ID | Democratic | D+0.5 |
| Blaine County, ID | Democratic | D+11.0 |
| Boise County, ID | Democratic | D+4.5 |
| Bonner County, ID | Democratic | D+4.3 |
| Bonneville County, ID | Democratic | D+8.8 |
| Boundary County, ID | Democratic | D+5.7 |
| Butte County, ID | Democratic | D+1.7 |
| Camas County, ID | Republican | R+1.9 |
| Canyon County, ID | Republican | R+9.8 |
| Caribou County, ID | Democratic | D+3.0 |
| Cassia County, ID | Republican | R+5.3 |
| Clark County, ID | Republican | R+22.5 |
| Clearwater County, ID | Democratic | D+29.5 |
| Custer County, ID | Democratic | D+1.0 |
| Elmore County, ID | Democratic | D+29.4 |
| Franklin County, ID | Republican | R+6.9 |
| Fremont County, ID | Democratic | D+6.2 |
| Gem County, ID | Democratic | D+4.1 |
| Gooding County, ID | Republican | R+6.7 |
| Idaho County, ID | Democratic | D+12.1 |
| Jefferson County, ID | Democratic | D+14.8 |
| Jerome County, ID | Republican | R+0.1 |
| Kootenai County, ID | Democratic | D+9.9 |
| Latah County, ID | Democratic | D+0.1 |
| Lemhi County, ID | Republican | R+8.9 |
| Lewis County, ID | Democratic | D+41.8 |
| Lincoln County, ID | Republican | R+6.4 |
| Madison County, ID | Democratic | D+11.6 |
| Minidoka County, ID | Democratic | D+0.4 |
| Nez Perce County, ID | Democratic | D+27.7 |
| Oneida County, ID | Democratic | D+2.3 |
| Owyhee County, ID | Republican | R+2.3 |
| Payette County, ID | Republican | R+21.1 |
| Power County, ID | Republican | R+4.8 |
| Shoshone County, ID | Democratic | D+15.4 |
| Teton County, ID | Democratic | D+6.2 |
| Twin Falls County, ID | Republican | R+12.9 |
| Valley County, ID | Republican | R+6.0 |
| Washington County, ID | Republican | R+0.4 |
Idaho results by county
44 counties. Third-party and independent votes are reported by the county source as one combined figure; every named candidate is listed in the complete result below.
| Led by | |||||
|---|---|---|---|---|---|
| Ada County | Thomas E. Dewey+3,719 | 11,25342.1% | 14,97256.1% | 4801.8% | 26,705 |
| Adams County | Harry S. Truman+44 | 64750.8% | 60347.3% | 241.9% | 1,274 |
| Bannock County | Harry S. Truman+4,099 | 9,67962.2% | 5,58035.9% | 3011.9% | 15,560 |
| Bear Lake County | Harry S. Truman+74 | 1,66450.7% | 1,59048.5% | 260.8% | 3,280 |
| Benewah County | Harry S. Truman+552 | 1,59058.2% | 1,03838.0% | 1033.8% | 2,731 |
| Bingham County | Harry S. Truman+35 | 3,19749.6% | 3,16249.0% | 891.4% | 6,448 |
| Blaine County | Harry S. Truman+237 | 1,18254.7% | 94543.7% | 351.6% | 2,162 |
| Boise County | Harry S. Truman+42 | 47951.0% | 43746.5% | 242.6% | 940 |
| Bonner County | Harry S. Truman+250 | 2,91649.7% | 2,66645.4% | 2854.9% | 5,867 |
| Bonneville County | Harry S. Truman+883 | 5,38253.8% | 4,49945.0% | 1201.2% | 10,001 |
| Boundary County | Harry S. Truman+119 | 1,02949.0% | 91043.4% | 1607.6% | 2,099 |
| Butte County | Harry S. Truman+14 | 42650.4% | 41248.7% | 80.9% | 846 |
| Camas County | Thomas E. Dewey+11 | 27848.3% | 28950.3% | 81.4% | 575 |
| Canyon County | Thomas E. Dewey+1,797 | 7,90343.0% | 9,70052.8% | 7604.1% | 18,363 |
| Caribou County | Harry S. Truman+28 | 47551.1% | 44748.1% | 80.9% | 930 |
| Cassia County | Thomas E. Dewey+246 | 2,17846.6% | 2,42451.9% | 691.5% | 4,671 |
| Clark County | Thomas E. Dewey+97 | 16538.2% | 26260.6% | 51.2% | 432 |
| Clearwater County | Harry S. Truman+751 | 1,57161.6% | 82032.2% | 1586.2% | 2,549 |
| Custer County | Harry S. Truman+13 | 62549.7% | 61248.7% | 201.6% | 1,257 |
| Elmore County | Harry S. Truman+735 | 1,58963.5% | 85434.1% | 602.4% | 2,503 |
| Franklin County | Thomas E. Dewey+265 | 1,76346.2% | 2,02853.2% | 220.6% | 3,813 |
| Fremont County | Harry S. Truman+237 | 2,01452.8% | 1,77746.6% | 200.5% | 3,811 |
| Gem County | Harry S. Truman+139 | 1,72450.3% | 1,58546.3% | 1173.4% | 3,426 |
| Gooding County | Thomas E. Dewey+267 | 1,84445.9% | 2,11152.6% | 601.5% | 4,015 |
| Idaho County | Harry S. Truman+510 | 2,30054.5% | 1,79042.4% | 1283.0% | 4,218 |
| Jefferson County | Harry S. Truman+527 | 2,01756.5% | 1,49041.8% | 611.7% | 3,568 |
| Jerome County | Thomas E. Dewey+4 | 2,12449.3% | 2,12849.4% | 531.2% | 4,305 |
| Kootenai County | Harry S. Truman+1,019 | 5,28451.5% | 4,26541.6% | 7136.9% | 10,262 |
| Latah County | Harry S. Truman+5 | 3,81048.3% | 3,80548.2% | 2743.5% | 7,889 |
| Lemhi County | Thomas E. Dewey+173 | 86444.6% | 1,03753.5% | 371.9% | 1,938 |
| Lewis County | Harry S. Truman+737 | 1,22469.4% | 48727.6% | 522.9% | 1,763 |
| Lincoln County | Thomas E. Dewey+103 | 74846.3% | 85152.6% | 181.1% | 1,617 |
| Madison County | Harry S. Truman+422 | 2,02455.5% | 1,60243.9% | 210.6% | 3,647 |
| Minidoka County | Harry S. Truman+14 | 1,66848.6% | 1,65448.2% | 1103.2% | 3,432 |
| Nez Perce County | Harry S. Truman+2,579 | 5,74761.6% | 3,16834.0% | 4074.4% | 9,322 |
| Oneida County | Harry S. Truman+46 | 1,00850.9% | 96248.5% | 120.6% | 1,982 |
| Owyhee County | Thomas E. Dewey+44 | 92547.8% | 96950.0% | 432.2% | 1,937 |
| Payette County | Thomas E. Dewey+862 | 1,56838.4% | 2,43059.5% | 832.0% | 4,081 |
| Power County | Thomas E. Dewey+80 | 79547.3% | 87552.1% | 110.7% | 1,681 |
| Shoshone County | Harry S. Truman+1,272 | 4,47254.1% | 3,20038.7% | 5897.1% | 8,261 |
| Teton County | Harry S. Truman+79 | 67252.8% | 59346.6% | 70.6% | 1,272 |
| Twin Falls County | Thomas E. Dewey+1,814 | 6,01942.8% | 7,83355.7% | 2091.5% | 14,061 |
| Valley County | Thomas E. Dewey+111 | 82845.0% | 93951.0% | 744.0% | 1,841 |
| Washington County | Thomas E. Dewey+13 | 1,70048.8% | 1,71349.2% | 682.0% | 3,481 |
Nominees: Harry S. Truman (D) · Thomas E. Dewey (R) · Strom Thurmond (States' Rights Democratic)
Idaho's presidential margins
1892–2024, the 1948 contest in context
| 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% |
Source. Compiled historical county records — 1948 presidential returns · official county-level results. Real returns — nothing estimated.