current:
- 2022 – Certificate for ES&S DS950
- 2022 – Certificate for ES&S 6.2.0.0
- NOTICE: Montana Voting System Certification Event
- January 25, 2022 Voting System Application
- Voting System and Component Certification Application
- Voting Systems and Components Certified for Use in Montana
Archives:
- August 27, 2019 Voting System Application
- September 21, 2017 Voting System Certification Event Agenda
- July 12, 2017 Voting System Application
Montana’s paper ballots may be counted in two ways: hand count or with paper ballot optical or digital scan tabulators. Either way ALL Montanans vote on a paper ballot. Following is a list of the voting systems being used, by county.
Paper ballot tabulators
Model 650 (optical scan), DS850 (digital scan), DS450 (digital scan), and DS950 (digital scan) are central count tabulators; Model 100 (optical scan) and DS200 (digital scan) are precinct-level tabulators. Tabulators are not connected to the Internet.
Counties conduct a public test of tabulators before each primary and general election. Additionally, a random test is conducted on election day. A Post-Election Audit is conducted by each county that uses tabulators after federal elections. The post-election audit consists of a hand-count of randomly selected contests and precincts.
See the table below to view which method of paper ballot tabulation is used in each county.
| County | Ballot Tabulation Method(s) |
| Beaverhead | ES&S DS450 |
| Big Horn | ES&S DS850 |
| Blaine | ES&S DS450 |
| Broadwater | ES&S DS200 |
| Carbon | ES&S DS200 |
| Carter | ES&S DS200 |
| Cascade | ES&S DS850 |
| Chouteau | ES&S DS200 |
| Custer | ES&S DS200 |
| Daniels | Hand Count Paper Ballots |
| Dawson | ES&S DS200 |
| Deer Lodge | ES&S DS450 |
| Fallon | Hand Count Paper Ballots |
| Fergus | ES&S Model 450 |
| Flathead | ES&S DS850 |
| Gallatin | ES&S DS850 |
| Garfield | Hand Count Paper Ballots |
| Glacier | ES&S DS200 |
| Golden Valley | Hand Count Paper Ballots |
| Granite | ES&S DS450 |
| Hill | ES&S DS450 |
| Jefferson | ES&S DS450 |
| Judith Basin | ES&S DS200 |
| Lake | ES&S DS450 |
| Lewis and Clark | ES&S DS850 |
| Liberty | ES&S DS200 |
| Lincoln | ES&S DS450 |
| Madison | ES&S DS450 |
| McCone | Hand Count Paper Ballots |
| Meagher | Hand Count Paper Ballots |
| Mineral | ES&S DS200 |
| Missoula | ES&S DS850 |
| Musselshell | ES&S DS200 |
| Park | ES&S DS450 |
| Petroleum | ES&S DS200 |
| Phillips | ES&S DS200 |
| Pondera | ES&S DS200 |
| Powder River | Hand Count Paper Ballots |
| Powell | ES&S DS450 |
| Prairie | Hand Count Paper Ballots |
| Ravalli | ES&S DS850 |
| Richland | ES&S DS450 |
| Roosevelt | ES&S DS450 |
| Rosebud | ES&S DS200 |
| Sanders | ES&S DS850 |
| Sheridan | ES&S DS200 |
| Silver Bow | ES&S DS850/DS450 |
| Stillwater | ES&S DS200 |
| Sweet Grass | ES&S DS200 |
| Teton | ES&S DS200 |
| Toole | ES&S DS200 |
| Treasure | Hand Count Paper Ballots |
| Valley | ES&S DS200 |
| Wheatland | Hand Count Paper Ballots |
| Wibaux | ES&S DS200 |
| Yellowstone | ES&S DS850 |