Voter Registration Totals as of January 24, 2020
| Cong. Dist. |
Total Registered |
| 1 |
462,767 |
| 2 |
410,027 |
| Total |
872,794 |
| Leg. Dist. |
Total Registered |
| 1 |
29,651 |
| 2 |
30,415 |
| 3 |
26,746 |
| 4 |
27,481 |
| 5 |
28,116 |
| 6 |
23,434 |
| 7 |
24,578 |
| 8 |
29,758 |
| 9 |
23,190 |
| 10 |
18,886 |
| 11 |
25,522 |
| 12 |
21,374 |
| 13 |
22,962 |
| 14 |
39,279 |
| 15 |
24,611 |
| 16 |
26,585 |
| 17 |
23,799 |
| 18 |
30,551 |
| 19 |
33,080 |
| 20 |
27,562 |
| 21 |
30,659 |
| 22 |
23,520 |
| 23 |
18,739 |
| 24 |
20,948 |
| 25 |
20,390 |
| 26 |
22,611 |
| 27 |
17,396 |
| 28 |
24,034 |
| 29 |
21,338 |
| 30 |
25,455 |
| 31 |
20,314 |
| 32 |
25,370 |
| 33 |
20,293 |
| 34 |
21,824 |
| 35 |
22,323 |
| Total |
872,794 |
| County |
Total Registered |
| Ada |
259,646 |
| Adams |
2,635 |
| Bannock |
42,079 |
| Bear Lake |
3,424 |
| Benewah |
5,179 |
| Bingham |
20,314 |
| Blaine |
13,599 |
| Boise |
4,865 |
| Bonner |
26,967 |
| Bonneville |
53,160 |
| Boundary |
6,326 |
| Butte |
1,495 |
| Camas |
729 |
| Canyon |
92,816 |
| Caribou |
3,648 |
| Cassia |
9,545 |
| Clark |
386 |
| Clearwater |
4,413 |
| Custer |
2,823 |
| Elmore |
10,822 |
| Franklin |
6,265 |
| Fremont |
6,751 |
| Gem |
9,839 |
| Gooding |
6,207 |
| Idaho |
9,878 |
| Jefferson |
13,691 |
| Jerome |
8,031 |
| Kootenai |
84,642 |
| Latah |
22,937 |
| Lemhi |
5,252 |
| Lewis |
2,039 |
| Lincoln |
2,076 |
| Madison |
17,457 |
| Minidoka |
7,851 |
| Nez Perce |
21,395 |
| Oneida |
2,624 |
| Owyhee |
5,143 |
| Payette |
11,173 |
| Power |
3,293 |
| Shoshone |
6,645 |
| Teton |
6,364 |
| Twin Falls |
36,081 |
| Valley |
6,979 |
| Washington |
5,310 |
| Total |
872,794 |