Elections / 1984 · President · ID
Idaho — 1984 presidential election
Recent presidential results
Akashicstate1984 presidential electionIdaho · PresidentReaganR+46.0
How it voted
Share of the 1984 vote
| Ronald Reagan ✓Republican | 72.4% | 297,523 |
|---|---|---|
| Walter MondaleDemocratic | 26.4% | 108,510 |
| OtherAll other candidates | 1.2% | 5,111 |
1984presidential margin
D+60R+60
44 counties, each filled by 1984 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+46.2 |
| Adams County, ID | Republican | R+43.0 |
| Bannock County, ID | Republican | R+32.8 |
| Bear Lake County, ID | Republican | R+69.8 |
| Benewah County, ID | Republican | R+16.8 |
| Bingham County, ID | Republican | R+58.5 |
| Blaine County, ID | Republican | R+28.8 |
| Boise County, ID | Republican | R+47.2 |
| Bonner County, ID | Republican | R+19.3 |
| Bonneville County, ID | Republican | R+66.2 |
| Boundary County, ID | Republican | R+29.4 |
| Butte County, ID | Republican | R+48.4 |
| Camas County, ID | Republican | R+49.1 |
| Canyon County, ID | Republican | R+52.4 |
| Caribou County, ID | Republican | R+69.4 |
| Cassia County, ID | Republican | R+72.0 |
| Clark County, ID | Republican | R+70.8 |
| Clearwater County, ID | Republican | R+14.8 |
| Custer County, ID | Republican | R+55.6 |
| Elmore County, ID | Republican | R+51.4 |
| Franklin County, ID | Republican | R+75.4 |
| Fremont County, ID | Republican | R+65.7 |
| Gem County, ID | Republican | R+38.1 |
| Gooding County, ID | Republican | R+50.2 |
| Idaho County, ID | Republican | R+35.0 |
| Jefferson County, ID | Republican | R+76.6 |
| Jerome County, ID | Republican | R+58.0 |
| Kootenai County, ID | Republican | R+31.2 |
| Latah County, ID | Republican | R+15.8 |
| Lemhi County, ID | Republican | R+52.8 |
| Lewis County, ID | Republican | R+21.1 |
| Lincoln County, ID | Republican | R+51.1 |
| Madison County, ID | Republican | R+86.3 |
| Minidoka County, ID | Republican | R+61.2 |
| Nez Perce County, ID | Republican | R+15.2 |
| Oneida County, ID | Republican | R+61.5 |
| Owyhee County, ID | Republican | R+56.9 |
| Payette County, ID | Republican | R+52.2 |
| Power County, ID | Republican | R+53.9 |
| Shoshone County, ID | Republican | R+2.0 |
| Teton County, ID | Republican | R+53.7 |
| Twin Falls County, ID | Republican | R+57.0 |
| Valley County, ID | Republican | R+41.2 |
| Washington County, ID | Republican | R+45.3 |
complete certified result
Idaho candidate results
Top three shown first · expand for every reported candidate and write-in category
Source: MIT Election Data + Science Lab — U.S. President 1976–2024 state candidate returns
Nominees: Walter Mondale (D) · Ronald Reagan (R)
Idaho's presidential margins
1892–2024, the 1984 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% |
County-by-county results — 44 counties
| County | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| Ada County | R | 21,760 | 60,036 | 82,924 | |
| Adams County | R | 540 | 1,381 | 1,956 | |
| Bannock County | R | 9,399 | 18,742 | 28,496 | |
| Bear Lake County | R | 481 | 2,760 | 3,267 | |
| Benewah County | R | 1,447 | 2,039 | 3,534 | |
| Bingham County | R | 3,064 | 11,900 | 15,116 | |
| Blaine County | R | 1,971 | 3,603 | 5,657 | |
| Boise County | R | 436 | 1,249 | 1,721 | |
| Bonner County | R | 4,628 | 6,889 | 11,699 | |
| Bonneville County | R | 4,877 | 24,392 | 29,490 | |
| Boundary County | R | 1,158 | 2,159 | 3,402 | |
| Butte County | R | 429 | 1,245 | 1,685 | |
| Camas County | R | 123 | 364 | 491 | |
| Canyon County | R | 7,527 | 24,613 | 32,587 | |
| Caribou County | R | 535 | 3,032 | 3,597 | |
| Cassia County | R | 1,036 | 6,503 | 7,597 | |
| Clark County | R | 59 | 353 | 415 | |
| Clearwater County | R | 1,608 | 2,176 | 3,848 | |
| Custer County | R | 461 | 1,653 | 2,144 | |
| Elmore County | R | 1,458 | 4,595 | 6,105 | |
| Franklin County | R | 439 | 3,261 | 3,742 | |
| Fremont County | R | 818 | 4,006 | 4,853 | |
| Gem County | R | 1,607 | 3,644 | 5,350 | |
| Gooding County | R | 1,247 | 3,819 | 5,119 | |
| Idaho County | R | 1,996 | 4,219 | 6,349 | |
| Jefferson County | R | 743 | 5,770 | 6,563 | |
| Jerome County | R | 1,284 | 4,913 | 6,259 | |
| Kootenai County | R | 9,004 | 17,330 | 26,689 | |
| Latah County | R | 5,571 | 7,709 | 13,500 | |
| Lemhi County | R | 852 | 2,810 | 3,708 | |
| Lewis County | R | 648 | 1,000 | 1,666 | |
| Lincoln County | R | 386 | 1,211 | 1,615 | |
| Madison County | R | 483 | 6,798 | 7,319 | |
| Minidoka County | R | 1,398 | 5,938 | 7,420 | |
| Nez Perce County | R | 5,981 | 8,153 | 14,330 | |
| Oneida County | R | 360 | 1,528 | 1,898 | |
| Owyhee County | R | 574 | 2,141 | 2,755 | |
| Payette County | R | 1,410 | 4,605 | 6,121 | |
| Power County | R | 678 | 2,298 | 3,004 | |
| Shoshone County | R | 3,033 | 3,156 | 6,284 | |
| Teton County | R | 370 | 1,242 | 1,624 | |
| Twin Falls County | R | 4,567 | 16,974 | 21,771 | |
| Valley County | R | 945 | 2,299 | 3,286 | |
| Washington County | R | 1,119 | 3,015 | 4,188 |
Same ballot, 1984ID
Source. MIT Election Data + Science Lab — 1984 presidential returns · official county-level results. Real returns — nothing estimated.