Montana consistently has had one of the highest voter turnout rates in the nation.
The chart below shows voter registration and turnout for Primary and General Elections since 1920. Download the Chart. County-by-county turnout is also available, as are archived election results, from 1912 through the present, which include voter registration and turnout.
| Primary | General | |||||
| Year | Registered | Votes Cast | % | Registered | Votes Cast | % |
| 1920 | 230,221 | 102,971 | 44.7% | 261,257 | 178,968 | 68.5% |
| 1922 | 224,142 | 108,643 | 48.5% | 243,936 | 158,737 | 65.1% |
| 1924 | 211,450 | 109,688 | 51.9% | 240,800 | 174,415 | 72.4% |
| 1926 | 205,822 | 103,106 | 50.1% | 227,118 | 153,442 | 67.6% |
| 1928 | 203,193 | 117,300 | 57.7% | 241,096 | 194,840 | 80.8% |
| 1930 | 220,671 | 100,157 | 45.4% | 240,086 | 176,161 | 73.4% |
| 1932 | 232,545 | 146,038 | 62.8% | 265,181 | 216,381 | 81.6% |
| 1934 | 247,248 | 133,098 | 53.8% | 268,482 | 203,626 | 75.8% |
| 1936 | 251,807 | 155,781 | 61.9% | 283,695 | 226,353 | 79.8% |
| 1938 | 248,443 | 151,620 | 61.0% | 269,963 | 208,710 | 77.3% |
| 1940 | 253,138 | 146,354 | 57.8% | 295,237 | 240,694 | 81.5% |
| 1942 | 258,749 | 118,478 | 45.8% | 271,773 | 170,514 | 62.7% |
| 1944 | 203,749 | 85,546 | 42.0% | 248,392 | 197,217 | 79.4% |
| 1946 | 241,550 | 127,889 | 52.9% | 263,422 | 190,566 | 72.3% |
| 1948 | 236,236 | 133,742 | 56.6% | 269,779 | 221,003 | 81.9% |
| 1950 | 250,374 | 128,058 | 51.1% | 272,103 | 210,527 | 77.4% |
| 1952 | 274,929 | 146,252 | 53.2% | 304,053 | 260,469 | 85.7% |
| 1954 | 283,651 | 136,466 | 48.1% | 296,611 | 227,454 | 76.7% |
| 1956 | 273,236 | 136,081 | 49.8% | 316,444 | 263,204 | 83.2% |
| 1958 | 289,851 | 145,462 | 50.2% | 305,614 | 229,483 | 75.1% |
| 1960 | 279,685 | 196,210 | 70.2% | 322,876 | 276,612 | 85.7% |
| 1962 | 301,003 | 152,422 | 50.6% | 318,721 | 248,441 | 77.9% |
| 1964 | 290,109 | 185,102 | 63.8% | 327,477 | 280,975 | 85.8% |
| 1966 | 306,852 | 156,042 | 50.9% | 330,182 | 264,971 | 80.2% |
| 1968 | 299,818 | 203,353 | 67.8% | 331,078 | 285,892 | 86.4% |
| 1970 | 304,328 | 166,126 | 54.6% | 325,315 | 254,790 | 78.3% |
| 1972 | 336,913 | 238,215 | 70.7% | 386,867 | 327,176 | 84.6% |
| 1974 | 352,244 | 179,153 | 50.9% | 373,889 | 260,496 | 69.7% |
| 1976 | 411,087 | 208,346 | 50.7% | 454,924 | 339,346 | 74.6% |
| 1978 | 381,769 | 207,903 | 54.5% | 410,046 | 296,521 | 72.3% |
| 1980 | 452,510 | 228,750 | 50.6% | 496,402 | 371,976 | 74.9% |
| 1982 | 412,841 | 198,840 | 48.2% | 445,888 | 328,082 | 73.6% |
| 1984 | 482,429 | 192,226 | 39.8% | 526,841 | 395,006 | 75.0% |
| 1986 | 421,264 | 166,622 | 39.6% | 443,935 | 326,436 | 73.5% |
| 1988 | 471,352 | 224,217 | 47.6% | 505,541 | 378,981 | 75.0% |
| 1990 | 408,354 | 201,118 | 49.3% | 435,900 | 326,652 | 74.9% |
| 1992 | 479,578 | 247,158 | 51.5% | 529,299 | 417,564 | 78.9% |
| 1994 | 485,629 | 228,603 | 47.1% | 514,051 | 359,455 | 69.9% |
| 1996 | 562,579 | 228,040 | 40.5% | 590,751 | 417,232 | 70.6% |
| 1998 | 602,716 | 161,568 | 26.8% | 639,241 | 338,733 | 53.0% |
| 2000 | 671,325 | 223,419 | 33.3% | 698,260 | 417,916 | 59.9% |
| 2002 | 606,147 | 174,730 | 29.0% | 624,548 | 340,272 | 54.5% |
| 2004 | 595,668 | 220,210 | 37.0% | 638,474 | 456,096 | 71.4% |
| 2006 | 626,853 | 214,840 | 34.3% | 649,436 | 411,061 | 63.3% |
| 2008 | 630,633 | 285,215 | 45.2% | 668,085 | 497,599 | 74.5% |
| 2010 | 639,309 | 206,791 | 32.5% | 651,335 | 367,096 | 56.36% |
| 2012 | 642,308 | 238,771 | 37.17% | 681,608 | 491,966 | 72.18% |
| 2014 | 659,921 | 218,882 | 33.17% | 674,264 | 373,831 | 55.44% |
| 2016 | 648,764 | 293,548 | 45.25% | 694,370 | 516,901 | 74.44% |
| 2017 | 700,401 | 383,301 | 54.73% | |||
| 2018 | 679,333 | 282,704 | 41.61% | 711,844 | 509,213 | 71.53% |
| 2020 | 696,292 | 382,072 | 54.87% | 752,538 | 612,075 | 81.33% |
| 2022 | 743,710 | 293,049 | 39.40% | 762,959 | 488,326 | 61.38% |