Voter Registration Totals as of May 6, 2019
| Cong. Dist. |
Total Registered |
| 1 |
450,854 |
| 2 |
404,308 |
| Total |
855,162 |
| Leg. Dist. |
Total Registered |
| 1 |
28,950 |
| 2 |
29,488 |
| 3 |
25,831 |
| 4 |
26,803 |
| 5 |
27,594 |
| 6 |
23,256 |
| 7 |
24,124 |
| 8 |
29,200 |
| 9 |
22,809 |
| 10 |
18,409 |
| 11 |
24,883 |
| 12 |
20,929 |
| 13 |
22,392 |
| 14 |
37,141 |
| 15 |
24,199 |
| 16 |
26,002 |
| 17 |
23,081 |
| 18 |
29,770 |
| 19 |
32,075 |
| 20 |
26,933 |
| 21 |
29,831 |
| 22 |
22,825 |
| 23 |
18,431 |
| 24 |
20,491 |
| 25 |
20,241 |
| 26 |
22,223 |
| 27 |
17,181 |
| 28 |
23,585 |
| 29 |
20,983 |
| 30 |
25,255 |
| 31 |
20,015 |
| 32 |
24,990 |
| 33 |
20,216 |
| 34 |
22,847 |
| 35 |
22,179 |
| Total |
855,162 |
| County |
Total Registered |
| Ada |
251,857 |
| Adams |
2,597 |
| Bannock |
41,284 |
| Bear Lake |
3,436 |
| Benewah |
5,066 |
| Bingham |
20,015 |
| Blaine |
13,300 |
| Boise |
4,793 |
| Bonner |
26,295 |
| Bonneville |
52,831 |
| Boundary |
6,233 |
| Butte |
1,492 |
| Camas |
713 |
| Canyon |
90,617 |
| Caribou |
3,691 |
| Cassia |
9,449 |
| Clark |
397 |
| Clearwater |
4,370 |
| Custer |
2,805 |
| Elmore |
10,478 |
| Franklin |
6,139 |
| Fremont |
6,727 |
| Gem |
9,562 |
| Gooding |
6,107 |
| Idaho |
9,719 |
| Jefferson |
13,563 |
| Jerome |
7,968 |
| Kootenai |
82,122 |
| Latah |
22,528 |
| Lemhi |
5,210 |
| Lewis |
1,989 |
| Lincoln |
2,103 |
| Madison |
18,473 |
| Minidoka |
7,732 |
| Nez Perce |
21,267 |
| Oneida |
2,505 |
| Owyhee |
5,147 |
| Payette |
10,985 |
| Power |
3,284 |
| Shoshone |
6,457 |
| Teton |
6,233 |
| Twin Falls |
35,570 |
| Valley |
6,830 |
| Washington |
5,223 |
| Total |
855,162 |