Which Idaho counties moved most toward Democrats in 2026?
By Dem movement (2026 margin minus Harris's 2024 margin, in points):
- Camas County: +21.3
- Franklin County: +20.2
- Lincoln County: +18.7
- Bonneville County: +18.2
- Twin Falls County: +17.3
Idaho: 2026 election results by county and religion
How much did Idaho move toward Democrats in 2026?
In Idaho, the Democratic margin in the 2026 U.S. Senate race shifted +13.5 points from Harris's 2024 margin (R+36.5 in 2024, R+23.0 in 2026), counting all votes together. 43 of 44 counties moved toward Democrats, and the median county moved +11.8 points.
Map of Dem movement by county in Idaho
R +30D +30Blue moved toward Democrats, red toward Republicans; the deeper the color, the bigger the move. Hover or tap a county for details.
Which Idaho counties have the largest Christian share, and how did they move?
Share of the 2020 population belonging to a Christian congregation (leaving out counties where members outnumber residents):
- Bear Lake County: 90.0% Christian, Dem movement +6.3
- Jefferson County: 88.3% Christian, Dem movement +15.9
- Butte County: 88.0% Christian, Dem movement +14.6
- Fremont County: 77.2% Christian, Dem movement +13.9
- Power County: 76.9% Christian, Dem movement +8.6
Idaho counties ranked by Dem movement
Dem movement is the 2026 Democratic margin in the state's top race (U.S. Senate; independent counted as Democratic side) minus Harris's 2024 margin, in points. Religion columns are each group's share of the 2020 population, counting congregation members, not how people identify.
| County | Dem movement | 2024 margin | 2026 margin | Christian | Protestant | Evangelical | Catholic | No Congregation |
|---|---|---|---|---|---|---|---|---|
| Camas County | +21.3 | R+54.1 | R+32.8 | 68.6% | 37.1% | 37.1% | 4.5% | 31.0% |
| Franklin County* | +20.2 | R+77.6 | R+57.4 | 118.7% | 1.9% | 1.6% | 2.8% | -18.7% |
| Lincoln County | +18.7 | R+56.0 | R+37.3 | 33.4% | 12.0% | 7.9% | 4.5% | 66.6% |
| Bonneville County | +18.2 | R+45.4 | R+27.1 | 65.3% | 6.4% | 4.8% | 5.2% | 34.6% |
| Twin Falls County | +17.3 | R+48.8 | R+31.5 | 47.5% | 14.1% | 10.1% | 7.5% | 52.4% |
| Bingham County | +16.7 | R+59.6 | R+43.0 | 54.0% | 3.7% | 2.6% | 2.0% | 45.9% |
| Jerome County | +16.4 | R+53.7 | R+37.3 | 31.4% | 4.4% | 3.9% | 7.3% | 68.5% |
| Valley County | +16.0 | R+18.6 | R+2.5 | 46.1% | 25.9% | 24.4% | 11.7% | 53.9% |
| Jefferson County | +15.9 | R+73.3 | R+57.4 | 88.3% | 1.4% | 1.1% | 5.2% | 11.7% |
| Madison County | +14.9 | R+64.3 | R+49.4 | 53.6% | 0.7% | 0.7% | 1.5% | 46.4% |
| Canyon County | +14.8 | R+46.6 | R+31.9 | 43.0% | 13.8% | 12.7% | 11.8% | 56.9% |
| Minidoka County | +14.6 | R+63.3 | R+48.7 | 48.8% | 8.5% | 7.1% | 11.3% | 51.2% |
| Butte County | +14.6 | R+72.5 | R+57.9 | 88.0% | 20.1% | 14.2% | 6.1% | 11.9% |
| Boise County | +14.4 | R+54.2 | R+39.8 | 32.4% | 7.6% | 6.7% | 9.1% | 67.5% |
| Bannock County | +14.3 | R+25.1 | R+10.8 | 50.6% | 7.0% | 5.4% | 7.3% | 48.7% |
| Cassia County | +14.2 | R+69.1 | R+54.9 | 57.8% | 6.6% | 5.5% | 6.2% | 42.2% |
| Fremont County | +13.9 | R+69.0 | R+55.0 | 77.2% | 4.0% | 3.1% | 12.8% | 22.8% |
| Gooding County | +13.9 | R+60.4 | R+46.5 | 26.2% | 6.0% | 2.3% | 4.9% | 73.8% |
| Elmore County | +13.4 | R+48.5 | R+35.1 | 36.2% | 11.6% | 8.5% | 13.5% | 63.1% |
| Ada County | +13.2 | R+10.3 | D+2.9 | 46.5% | 17.5% | 12.0% | 13.7% | 52.5% |
| Adams County | +12.3 | R+54.5 | R+42.2 | 31.9% | 14.1% | 13.0% | 13.6% | 68.1% |
| Owyhee County | +12.0 | R+67.6 | R+55.5 | 35.2% | 6.0% | 5.7% | 15.9% | 64.8% |
| Caribou County | +11.7 | R+71.2 | R+59.5 | 74.5% | 1.1% | 0.8% | 3.8% | 25.5% |
| Payette County | +11.1 | R+62.9 | R+51.8 | 48.2% | 14.6% | 10.4% | 15.0% | 51.8% |
| Lemhi County | +11.0 | R+55.0 | R+43.9 | 55.8% | 24.7% | 21.1% | 8.5% | 44.2% |
| Blaine County | +10.5 | D+31.7 | D+42.1 | 33.5% | 8.1% | 5.9% | 16.2% | 63.9% |
| Oneida County | +10.5 | R+76.0 | R+65.5 | 76.0% | 1.7% | 1.2% | 2.8% | 24.0% |
| Custer County | +10.3 | R+53.3 | R+43.0 | 70.2% | 21.0% | 20.5% | 7.9% | 29.8% |
| Gem County | +9.4 | R+66.0 | R+56.6 | 35.5% | 6.0% | 4.5% | 7.6% | 64.5% |
| Bonner County | +8.9 | R+46.1 | R+37.3 | 25.4% | 12.3% | 11.1% | 8.0% | 74.5% |
| Power County | +8.6 | R+45.1 | R+36.5 | 76.9% | 12.4% | 4.3% | 29.0% | 23.0% |
| Clark County | +8.1 | R+69.1 | R+61.0 | 29.0% | 6.1% | 0.0% | 0.0% | 71.0% |
| Nez Perce County | +7.2 | R+38.6 | R+31.4 | 44.8% | 22.3% | 19.1% | 18.1% | 55.0% |
| Idaho County | +7.2 | R+67.8 | R+60.6 | 60.9% | 21.7% | 20.5% | 31.2% | 39.1% |
| Teton County | +7.2 | D+6.8 | D+14.0 | 29.1% | 4.1% | 0.8% | 2.6% | 70.0% |
| Washington County | +7.2 | R+61.6 | R+54.4 | 48.0% | 15.1% | 13.5% | 20.5% | 52.0% |
| Boundary County | +6.6 | R+65.4 | R+58.8 | 36.3% | 22.3% | 20.7% | 7.6% | 63.7% |
| Bear Lake County | +6.3 | R+77.0 | R+70.7 | 90.0% | 0.2% | 0.0% | 2.8% | 10.0% |
| Clearwater County | +6.1 | R+62.8 | R+56.8 | 32.4% | 22.1% | 20.1% | 6.0% | 67.6% |
| Shoshone County | +6.1 | R+49.4 | R+43.3 | 17.7% | 8.8% | 5.8% | 5.2% | 82.3% |
| Kootenai County | +5.8 | R+51.8 | R+46.0 | 63.6% | 41.4% | 40.1% | 15.8% | 36.3% |
| Lewis County | +5.1 | R+65.0 | R+59.9 | 52.6% | 20.9% | 16.4% | 25.9% | 47.3% |
| Benewah County | +0.5 | R+61.4 | R+60.9 | 37.0% | 18.3% | 17.3% | 11.9% | 63.0% |
| Latah County | −1.6 | R+8.0 | R+9.6 | 28.7% | 9.5% | 5.7% | 12.9% | 70.1% |
* The Religion Census counts church members where their church is, not where they live. That skews the religion shares of the 1 counties marked with an asterisk, where members outnumber residents.
Idaho congressional districts
"House vs. 2024" compares the 2026 House margin with Harris's 2024 margin inside the district's current lines (NBC News's district baseline); it is blank where only one party ran, where two candidates of one party met in a top-two race, or where NBC has no 2024 baseline. "Top race, from its counties" averages the county Dem movement of the district's counties, weighted by each county's House votes.
| District | Winner | House vs. 2024 | Top race, from its counties | 2024 president | 2026 House | Christian | Evangelical | Catholic |
|---|---|---|---|---|---|---|---|---|
| ID-01 | Fulcher (R) | +10.7 | +10.3 | R+46.2 | R+35.5 | 46.1% | 17.9% | 13.6% |
| ID-02 | Simpson (R) | +16.2 | +14.5 | R+27.6 | R+11.4 | 52.9% | 7.7% | 9.2% |
Data: download the full report and all data. Method: how it's measured.