Voter Registration Totals as of February 27, 2020
| Cong. Dist. |
Total Registered |
| 1 |
468,634 |
| 2 |
413,235 |
| Total |
881,869 |
| Leg. Dist. |
Total Registered |
| 1 |
29,971 |
| 2 |
30,795 |
| 3 |
27,329 |
| 4 |
27,915 |
| 5 |
28,345 |
| 6 |
23,663 |
| 7 |
24,766 |
| 8 |
30,009 |
| 9 |
23,409 |
| 10 |
19,134 |
| 11 |
25,840 |
| 12 |
21,697 |
| 13 |
23,335 |
| 14 |
39,750 |
| 15 |
24,790 |
| 16 |
26,780 |
| 17 |
23,999 |
| 18 |
30,852 |
| 19 |
33,380 |
| 20 |
27,876 |
| 21 |
31,077 |
| 22 |
23,901 |
| 23 |
18,931 |
| 24 |
21,191 |
| 25 |
20,532 |
| 26 |
22,807 |
| 27 |
17,487 |
| 28 |
24,177 |
| 29 |
21,511 |
| 30 |
25,682 |
| 31 |
20,425 |
| 32 |
25,544 |
| 33 |
20,523 |
| 34 |
21,990 |
| 35 |
22,456 |
| Total |
881,869 |
| County |
Total Registered |
| Ada |
262,405 |
| Adams |
2,664 |
| Bannock |
42,373 |
| Bear Lake |
3,421 |
| Benewah |
5,228 |
| Bingham |
20,425 |
| Blaine |
13,756 |
| Boise |
4,938 |
| Bonner |
27,249 |
| Bonneville |
53,677 |
| Boundary |
6,403 |
| Butte |
1,492 |
| Camas |
731 |
| Canyon |
94,118 |
| Caribou |
3,665 |
| Cassia |
9,602 |
| Clark |
384 |
| Clearwater |
4,449 |
| Custer |
2,826 |
| Elmore |
10,938 |
| Franklin |
6,320 |
| Fremont |
6,781 |
| Gem |
9,934 |
| Gooding |
6,230 |
| Idaho |
9,940 |
| Jefferson |
13,799 |
| Jerome |
8,100 |
| Kootenai |
86,039 |
| Latah |
23,117 |
| Lemhi |
5,266 |
| Lewis |
2,058 |
| Lincoln |
2,090 |
| Madison |
17,585 |
| Minidoka |
7,885 |
| Nez Perce |
21,605 |
| Oneida |
2,646 |
| Owyhee |
5,201 |
| Payette |
11,289 |
| Power |
3,315 |
| Shoshone |
6,696 |
| Teton |
6,425 |
| Twin Falls |
36,415 |
| Valley |
7,045 |
| Washington |
5,344 |
| Total |
881,869 |