Voter Registration Totals as of August 1, 2019
| Cong. Dist. |
Total Registered |
| 1 |
451,810 |
| 2 |
403,993 |
| Total |
855,803 |
| Leg. Dist. |
Total Registered |
| 1 |
29,015 |
| 2 |
29,566 |
| 3 |
25,887 |
| 4 |
26,801 |
| 5 |
27,707 |
| 6 |
23,226 |
| 7 |
24,178 |
| 8 |
29,271 |
| 9 |
22,773 |
| 10 |
18,454 |
| 11 |
24,990 |
| 12 |
20,959 |
| 13 |
22,420 |
| 14 |
37,354 |
| 15 |
24,169 |
| 16 |
25,975 |
| 17 |
23,060 |
| 18 |
29,735 |
| 19 |
32,147 |
| 20 |
27,026 |
| 21 |
29,885 |
| 22 |
22,929 |
| 23 |
18,324 |
| 24 |
20,491 |
| 25 |
20,168 |
| 26 |
22,246 |
| 27 |
17,149 |
| 28 |
23,701 |
| 29 |
20,958 |
| 30 |
25,094 |
| 31 |
20,110 |
| 32 |
24,966 |
| 33 |
20,138 |
| 34 |
22,757 |
| 35 |
22,174 |
| Total |
855,803 |
| County |
Total Registered |
| Ada |
252,280 |
| Adams |
2,594 |
| Bannock |
41,374 |
| Bear Lake |
3,425 |
| Benewah |
5,138 |
| Bingham |
20,110 |
| Blaine |
13,323 |
| Boise |
4,808 |
| Bonner |
26,359 |
| Bonneville |
52,591 |
| Boundary |
6,230 |
| Butte |
1,479 |
| Camas |
710 |
| Canyon |
90,843 |
| Caribou |
3,686 |
| Cassia |
9,403 |
| Clark |
384 |
| Clearwater |
4,359 |
| Custer |
2,792 |
| Elmore |
10,472 |
| Franklin |
6,122 |
| Fremont |
6,704 |
| Gem |
9,615 |
| Gooding |
6,120 |
| Idaho |
9,754 |
| Jefferson |
13,607 |
| Jerome |
7,936 |
| Kootenai |
82,254 |
| Latah |
22,569 |
| Lemhi |
5,199 |
| Lewis |
1,983 |
| Lincoln |
2,093 |
| Madison |
18,406 |
| Minidoka |
7,746 |
| Nez Perce |
21,243 |
| Oneida |
2,494 |
| Owyhee |
5,062 |
| Payette |
10,947 |
| Power |
3,285 |
| Shoshone |
6,491 |
| Teton |
6,231 |
| Twin Falls |
35,513 |
| Valley |
6,857 |
| Washington |
5,212 |
| Total |
855,803 |