The Heritage Foundation's database lists 2 proven election-fraud cases in Montana since 1982, 2 of them since 2000, most commonly absentee fraud. Against 800,573 registered voters, the since-2000 cases equal 0.00025% of the rolls, or 1 in 400k registered voters. Per ballot, that is 0.57 cases per million presidential votes since 2000: 0.4× the national rate (below average), #39 of 51. Even here, proven fraud touches a vanishing sliver of the vote. What new voting rules would cost →
2
proven cases, 1982–2025 (2 criminal convictions)
0.00025%
of registered voters: 2 cases since 2000 vs 800,573 registered voters (2024)
0.57
cases per million presidential ballots, 2000–2024 (U.S.: 1.58)
#39
of 51 by per-ballot rate · 0 noncitizen cases
Montana cases by type of fraud, 1982–2025. A case can involve more than one type.
Absentee / mail ballot fraud
1
False registrations
1
Montana cases by year the case concluded, 2000–2025 (2 total). 2025 is incomplete.
Every Montana case in the database
2 criminal conviction. Individuals are not named here; each row links to the court record or news report Heritage cites. Overturned races are named.