Idaho 1st Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | −27.6% |
| 2012 | −34.3% |
| 2016 | −39.1% |
| 2020 | −38.2% |
| 2024 | −44.8% |
Federal officeholders only. State and local officeholders are planned for the next data pass.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
| Year | District | Won | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | 1 | R | 25.4%118,656 | 71.0%331,049 | 466,242 |
| 2022 | 1 | R | 26.3%82,261 | 71.3%222,901 | 312,442 |
| 2020 | 1 | R | 28.6%131,380 | 67.8%310,736 | 458,576 |
| 2018 | 1 | R | 30.8%96,922 | 62.8%197,719 | 315,069 |
| 2016 | 1 | R | 31.8%113,052 | 68.2%242,252 | 355,357 |
| 2014 | 1 | R | 35.0%77,277 | 65.0%143,580 | 220,864 |
| 2012 | 1 | R | 30.8%97,450 | 63.0%199,402 | 316,724 |
| 2010 | 1 | R | 41.3%102,135 | 51.0%126,231 | 247,427 |
| 2008 | 1 | D | 50.6%175,898 | 49.4%171,687 | 347,585 |
| 2006 | 1 | R | 44.8%103,935 | 49.9%115,843 | 231,974 |
| 2004 | 1 | R | 30.5%90,927 | 69.5%207,662 | 298,589 |
| 2002 | 1 | R | 38.9%80,269 | 58.6%120,743 | 206,141 |
| 2000 | 1 | R | 31.4%84,080 | 64.8%173,743 | 268,116 |
| 1998 | 1 | R | 44.7%91,653 | 55.3%113,231 | 204,884 |
| 1996 | 1 | R | 47.5%125,899 | 50.0%132,344 | 264,778 |
| 1994 | 1 | R | 44.6%89,826 | 55.4%111,728 | 201,554 |
| 1992 | 1 | D | 58.0%140,985 | 37.5%90,983 | 242,890 |
| 1990 | 1 | D | 53.0%85,054 | 47.0%75,406 | 160,460 |
| 1988 | 1 | R | 34.2%70,328 | 65.8%135,221 | 205,549 |
| 1986 | 1 | R | 32.3%59,723 | 65.1%120,553 | 185,124 |
| 1984 | 1 | R | 31.4%63,591 | 68.6%139,085 | 202,676 |
| 1982 | 1 | R | 46.3%74,388 | 53.7%86,277 | 160,665 |
| 1980 | 1 | R | 46.3%100,697 | 53.7%116,845 | 217,542 |
| 1978 | 1 | R | 40.1%57,972 | 59.9%86,680 | 144,652 |
| 1976 | 1 | R | 45.4%79,662 | 54.6%95,833 | 175,495 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 28.7%169,808 | 60.7%358,539 | 590,890 |
| 2020 | R | 33.2%285,864 | 62.6%538,446 | 859,827 |
| 2016 | R | 27.7%188,249 | 66.1%449,017 | 678,943 |
| 2014 | R | 34.7%151,574 | 65.3%285,596 | 437,170 |
| 2010 | R | 24.9%112,057 | 71.2%319,953 | 449,439 |
| 2008 | R | 34.1%219,903 | 57.7%371,744 | 644,777 |
| 2004 | R | 0.0%0 | 100.0%499,796 | 499,796 |
| 2002 | R | 32.5%132,975 | 65.2%266,215 | 408,544 |
| 1998 | R | 28.4%107,375 | 69.5%262,966 | 378,174 |
| 1996 | R | 39.9%198,422 | 57.0%283,532 | 497,233 |
| 1992 | R | 43.5%208,036 | 56.5%270,468 | 478,504 |
| 1990 | R | 38.7%122,295 | 61.3%193,641 | 315,936 |
| 1986 | R | 48.4%185,066 | 51.6%196,958 | 382,024 |
| 1984 | R | 26.0%105,591 | 72.2%293,193 | 406,168 |
| 1980 | R | 48.8%214,439 | 49.7%218,701 | 439,647 |
| 1978 | R | 31.6%89,635 | 68.4%194,412 | 284,047 |
Anchored by the Idaho Panhandle and the Treasure Valley's rural counties, ID-01 delivered a 43.6-point presidential margin in 2024, placing it among the most consistently one-sided congressional districts in the country.
Across the recorded series it reached a Republican high of 44.8 points in 2024. Between 2020 and 2024 the district moved 6.7 points toward the Republican candidate; the 2024 margin was 44.8 points.
A population of 919,529, a 83% non-Hispanic-white share, and a median household income of $79,577 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 2 and Congressional District (at Large).
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Idaho 1st Congressional District. Akashic. https://akashic.app/cd/1601/. Accessed May 20, 2026. License: CC BY 4.0.