| 1972 | 1974 | 1976 | 1978 | 1980 | 1982 | 1984 | 1986 | 1988 | 1990 | 1992 | 1994 | 1996 | 1998 | 2000 |
| Voting-Age Population, Percent Reporting Registered, and Voted | | | | | | | | | | | | | | | |
| 18 To 20 Years Old | Congressional Election Years | Percent Reporting They Registered | | 36.4 | | 34.7 | | 35.0 | | 35.4 | | 35.4 | | 37.2 | | 32.1 | |
| Percent Reporting They Voted | | 20.8 | | 20.1 | | 19.8 | | 18.6 | | 18.4 | | 16.5 | | 13.5 | |
| Presidential Election Years | Percent Reporting They Registered | 58.1 | | 47.1 | | 44.7 | | 47.0 | | 44.9 | | 48.3 | | 45.6 | | 40.5 |
| Percent Reporting They Voted | 48.3 | | 38.0 | | 35.7 | | 36.7 | | 33.2 | | 38.5 | | 31.2 | | 28.4 |
| Voting-age Population1 | 11.0 | 11.6 | 12.1 | 12.2 | 12.3 | 12.1 | 11.2 | 10.7 | 10.7 | 10.8 | 9.7 | 10.3 | 10.8 | 11.4 | 11.9 |
| 21 To 24 Years Old | Congressional Election Years | Percent Reporting They Registered | | 45.3 | | 45.1 | | 47.8 | | 46.6 | | 43.3 | | 45.5 | | 35.0 | |
| Percent Reporting They Voted | | 26.4 | | 26.2 | | 28.4 | | 24.2 | | 22.0 | | 22.3 | | 19.2 | |
| Presidential Election Years | Percent Reporting They Registered | 59.5 | | 54.8 | | 52.7 | | 54.3 | | 50.6 | | 55.3 | | 51.2 | | 49.3 |
| Percent Reporting They Voted | 50.7 | | 45.6 | | 43.1 | | 43.5 | | 38.3 | | 45.7 | | 33.4 | | 35.4 |
| Voting-age Population1 | 13.6 | 14.1 | 14.8 | 15.5 | 15.9 | 16.7 | 16.7 | 15.7 | 14.8 | 14.0 | 14.6 | 14.9 | 13.9 | 14.1 | 14.9 |
| 25 To 34 Years Old | Congressional Election Years | Percent Reporting They Registered | | 54.7 | | 55.5 | | 57.1 | | 55.8 | | 52.0 | | 51.5 | | 52.4 | |
| Percent Reporting They Voted | | 37.0 | | 38.0 | | 40.4 | | 35.1 | | 33.8 | | 32.2 | | 28.0 | |
| Presidential Election Years | Percent Reporting They Registered | 68.4 | | 62.3 | | 62.0 | | 63.3 | | 57.8 | | 60.6 | | 56.9 | | 54.7 |
| Percent Reporting They Voted | 59.7 | | 55.4 | | 54.6 | | 54.5 | | 48.0 | | 53.2 | | 43.1 | | 43.7 |
| Voting-age Population1 | 26.9 | 29.3 | 31.7 | 33.4 | 35.7 | 38.8 | 40.3 | 41.9 | 42.7 | 42.7 | 41.6 | 41.1 | 40.1 | 38.6 | 37.3 |
| 35 To 44 Years Old | Congressional Election Years | Percent Reporting They Registered | | 66.7 | | 66.7 | | 67.5 | | 67.9 | | 65.5 | | 63.3 | | 62.4 | |
| Percent Reporting They Voted | | 49.1 | | 50.1 | | 52.2 | | 49.3 | | 48.4 | | 46.0 | | 40.7 | |
| Presidential Election Years | Percent Reporting They Registered | 74.8 | | 69.8 | | 70.6 | | 70.9 | | 69.3 | | 69.2 | | 66.5 | | 63.8 |
| Percent Reporting They Voted | 66.3 | | 63.3 | | 64.4 | | 63.5 | | 61.3 | | 63.6 | | 54.9 | | 55.0 |
| Voting-age Population1 | 22.2 | 22.4 | 22.8 | 24.2 | 25.6 | 28.1 | 30.7 | 33.0 | 35.2 | 37.9 | 39.7 | 41.9 | 43.3 | 44.4 | 44.5 |
| 45 To 64 Years Old | Congressional Election Years | Percent Reporting They Registered | | 73.6 | | 74.3 | | 75.6 | | 74.8 | | 71.4 | | 71.0 | | 71.1 | |
| Percent Reporting They Voted | | 56.9 | | 58.5 | | 62.2 | | 58.7 | | 55.8 | | 56.0 | | 53.6 | |
| Presidential Election Years | Percent Reporting They Registered | 79.7 | | 75.5 | | 75.8 | | 76.6 | | 75.5 | | 75.3 | | 73.5 | | 71.2 |
| Percent Reporting They Voted | 70.8 | | 68.7 | | 69.3 | | 69.8 | | 67.9 | | 70.0 | | 64.4 | | 64.1 |
| Voting-age Population1 | 42.3 | 43.0 | 43.3 | 43.4 | 43.6 | 44.2 | 44.3 | 44.8 | 45.9 | 46.9 | 49.1 | 50.9 | 53.7 | 57.4 | 61.4 |
| 65 Years Old And Over | Congressional Election Years | Percent Reporting They Registered | | 70.2 | | 72.8 | | 75.2 | | 76.9 | | 76.5 | | 75.6 | | 75.4 | |
| Percent Reporting They Voted | | 51.4 | | 55.9 | | 59.9 | | 60.9 | | 60.3 | | 60.7 | | 59.5 | |
| Presidential Election Years | Percent Reporting They Registered | 75.6 | | 71.4 | | 74.6 | | 76.9 | | 78.4 | | 78.0 | | 77.0 | | 76.1 |
| Percent Reporting They Voted | 63.5 | | 62.2 | | 65.1 | | 67.7 | | 68.8 | | 70.1 | | 67.0 | | 67.6 |
| Voting-age Population1 | 20.1 | 21.0 | 22.0 | 23.0 | 24.1 | 25.6 | 26.7 | 27.7 | 28.8 | 29.9 | 30.8 | 31.1 | 31.9 | 32.3 | 32.8 |
| Black | Congressional Election Years | Percent Reporting They Registered | | 54.9 | | 57.1 | | 59.1 | | 64.0 | | 58.8 | | 58.3 | | 60.2 | |
| Percent Reporting They Voted | | 33.8 | | 37.2 | | 43.0 | | 43.2 | | 39.2 | | 37.0 | | 39.6 | |
| Presidential Election Years | Percent Reporting They Registered | 65.5 | | 58.5 | | 60.0 | | 66.3 | | 64.5 | | 63.9 | | 63.5 | | 63.6 |
| Percent Reporting They Voted | 52.1 | | 48.7 | | 50.5 | | 55.8 | | 51.5 | | 54.0 | | 50.6 | | 53.5 |
| Voting-age Population1 | 13.5 | 14.2 | 14.9 | 15.6 | 16.4 | 17.6 | 18.4 | 19.0 | 19.7 | 20.4 | 21.0 | 21.8 | 22.5 | 23.3 | 24.1 |
| Congressional Election Years | Total2 | Percent Reporting They Registered | | 62.2 | | 62.6 | | 64.1 | | 64.3 | | 62.2 | | 62.0 | | 62.1 | |
| Percent Reporting They Voted | | 44.7 | | 45.9 | | 48.5 | | 46.0 | | 45.0 | | 44.6 | | 41.9 | |
| Employed | Congressional Election Years | Percent Reporting They Registered | | 63.8 | | 63.0 | | 65.5 | | 64.4 | | 62.6 | | 62.9 | | 62.6 | |
| Percent Reporting They Voted | | 46.8 | | 46.7 | | 50.0 | | 45.7 | | 45.1 | | 45.2 | | 41.2 | |
| Presidential Election Years | Percent Reporting They Registered | 74.3 | | 68.8 | | 68.7 | | 69.4 | | 67.1 | | 69.9 | | 67.0 | | 64.7 |
| Percent Reporting They Voted | 66.0 | | 62.0 | | 61.8 | | 61.6 | | 58.4 | | 63.8 | | 55.2 | | 55.5 |
| Voting-age Population1 | 80.2 | 83.1 | 86.0 | 93.2 | 95.0 | 97.2 | 104.2 | 108.5 | 113.8 | 115.5 | 116.3 | 122.6 | 125.6 | 130.5 | 133.4 |
| Female | Congressional Election Years | Percent Reporting They Registered | | 61.7 | | 62.5 | | 64.4 | | 65.0 | | 63.1 | | 63.2 | | 63.5 | |
| Percent Reporting They Voted | | 43.4 | | 45.3 | | 48.4 | | 46.1 | | 45.4 | | 44.9 | | 42.4 | |
| Presidential Election Years | Percent Reporting They Registered | 71.6 | | 66.4 | | 67.1 | | 69.3 | | 67.8 | | 69.3 | | 67.3 | | 65.6 |
| Percent Reporting They Voted | 62.0 | | 58.8 | | 59.4 | | 60.8 | | 58.3 | | 62.3 | | 55.5 | | 56.2 |
| Voting-age Population1 | 72.4 | 74.9 | 77.6 | 80.2 | 83.0 | 87.4 | 89.6 | 91.5 | 93.6 | 95.5 | 97.1 | 99.3 | 101.0 | 103.0 | 105.5 |
| Hispanic3 | Congressional Election Years | Percent Reporting They Registered | | 34.9 | | 32.9 | | 35.3 | | 35.9 | | 32.3 | | 30.0 | | 33.7 | |
| Percent Reporting They Voted | | 22.9 | | 23.5 | | 25.3 | | 24.2 | | 21.0 | | 19.1 | | 20.0 | |
| Presidential Election Years | Percent Reporting They Registered | 44.4 | | 37.8 | | 36.3 | | 40.1 | | 35.5 | | 35.0 | | 35.7 | | 34.9 |
| Percent Reporting They Voted | 37.5 | | 31.8 | | 29.9 | | 32.6 | | 28.8 | | 28.9 | | 26.7 | | 27.5 |
| Voting-age Population1 | 5.6 | 6.1 | 6.6 | 6.8 | 8.2 | 8.8 | 9.5 | 11.8 | 12.9 | 13.8 | 14.7 | 17.5 | 18.4 | 20.3 | 21.6 |
| Male | Congressional Election Years | Percent Reporting They Registered | | 62.8 | | 62.6 | | 63.7 | | 63.4 | | 61.2 | | 60.8 | | 60.6 | |
| Percent Reporting They Voted | | 46.2 | | 46.6 | | 48.7 | | 45.8 | | 44.6 | | 44.4 | | 41.4 | |
| Presidential Election Years | Percent Reporting They Registered | 73.1 | | 67.1 | | 66.6 | | 67.3 | | 65.2 | | 66.9 | | 64.4 | | 62.2 |
| Percent Reporting They Voted | 64.1 | | 59.6 | | 59.1 | | 59.0 | | 56.4 | | 60.2 | | 52.8 | | 53.1 |
| Voting-age Population1 | 63.8 | 66.4 | 69.0 | 71.5 | 74.1 | 78.0 | 80.3 | 82.4 | 84.5 | 86.6 | 88.6 | 91.0 | 92.6 | 95.2 | 97.1 |
| Not In Labor Force | Congressional Election Years | Percent Reporting They Registered | | 61.3 | | 63.4 | | 64.3 | | 65.4 | | 63.4 | | 61.9 | | 62.1 | |
| Percent Reporting They Voted | | 43.0 | | 46.2 | | 48.7 | | 48.2 | | 46.7 | | 45.3 | | 44.5 | |
| Presidential Election Years | Percent Reporting They Registered | 70.3 | | 65.2 | | 65.8 | | 68.1 | | 67.2 | | 66.8 | | 65.1 | | 63.8 |
| Percent Reporting They Voted | 59.3 | | 56.5 | | 57.0 | | 58.9 | | 57.3 | | 58.7 | | 54.1 | | 54.5 |
| Voting-age Population1 | 52.3 | 53.2 | 54.1 | 53.5 | 55.2 | 57.5 | 58.4 | 58.8 | 58.5 | 59.9 | 61.1 | 61.2 | 61.6 | 62.5 | 64.2 |
| Presidential Election Years | Total2 | Percent Reporting They Registered | 72.3 | | 66.7 | | 66.9 | | 68.3 | | 66.6 | | 68.2 | | 65.9 | | 63.9 |
| Percent Reporting They Voted | 63.0 | | 59.2 | | 59.2 | | 59.9 | | 57.4 | | 61.3 | | 54.2 | | 54.7 |
| Region4 | Midwest4 | Congressional Election Years | Percent Reporting They Registered | | 66.6 | | 68.2 | | 71.1 | | 70.7 | | 68.2 | | 68.7 | | 68.2 | |
| Percent Reporting They Voted | | 49.3 | | 50.5 | | 54.7 | | 49.5 | | 48.6 | | 48.8 | | 47.3 | |
| Presidential Election Years | Percent Reporting They Registered | | | 72.3 | | 73.8 | | 74.6 | | 72.5 | | 74.6 | | 71.6 | | 70.2 |
| Percent Reporting They Voted | | | 65.1 | | 65.8 | | 65.7 | | 62.9 | | 67.2 | | 59.3 | | 60.9 |
| Voting-age Population1 | | 38.1 | 39.2 | 40.3 | 41.5 | 41.9 | 42.1 | 42.8 | 43.3 | 43.9 | 44.4 | 44.5 | 45.2 | 45.9 | 46.4 |
| Northeast4 | Congressional Election Years | Percent Reporting They Registered | | 62.2 | | 62.3 | | 62.5 | | 62.0 | | 61.0 | | 60.9 | | 60.8 | |
| Percent Reporting They Voted | | 48.7 | | 48.1 | | 49.8 | | 44.4 | | 45.2 | | 45.2 | | 41.2 | |
| Presidential Election Years | Percent Reporting They Registered | 73.9 | | 65.9 | | 64.8 | | 66.6 | | 64.8 | | 67.0 | | 64.7 | | 63.7 |
| Percent Reporting They Voted | 66.4 | | 59.5 | | 58.5 | | 59.7 | | 57.4 | | 61.2 | | 54.5 | | 55.2 |
| Voting-age Population1 | 93.7 | 33.3 | 33.9 | 35.1 | 35.5 | 36.4 | 36.9 | 37.3 | 37.9 | 38.1 | 38.3 | 38.4 | 38.3 | 38.5 | 38.9 |
| South4 | Congressional Election Years | Percent Reporting They Registered | | 59.8 | | 60.1 | | 61.7 | | 63.0 | | 61.3 | | 60.7 | | 62.7 | |
| Percent Reporting They Voted | | 36.0 | | 39.6 | | 41.8 | | 43.0 | | 42.4 | | 40.5 | | 38.6 | |
| Presidential Election Years | Percent Reporting They Registered | 68.7 | | 64.6 | | 64.8 | | 66.9 | | 65.6 | | 67.2 | | 65.9 | | 64.5 |
| Percent Reporting They Voted | 55.4 | | 54.9 | | 55.6 | | 56.8 | | 54.5 | | 59.0 | | 52.2 | | 53.5 |
| Voting-age Population1 | 42.6 | 44.8 | 47.1 | 48.8 | 50.6 | 55.4 | 57.6 | 59.2 | 60.7 | 62.4 | 63.7 | 66.4 | 68.1 | 70.1 | 71.8 |
| West4 | Congressional Election Years | Percent Reporting They Registered | | 59.8 | | 59.1 | | 60.6 | | 60.8 | | 57.7 | | 58.1 | | 56.0 | |
| Percent Reporting They Voted | | 48.1 | | 47.5 | | 50.7 | | 48.4 | | 45.0 | | 46.4 | | 42.3 | |
| Presidential Election Years | Percent Reporting They Registered | | | 63.2 | | 63.3 | | 64.7 | | 63.0 | | 63.6 | | 60.8 | | 56.9 |
| Percent Reporting They Voted | | | 57.5 | | 57.2 | | 58.5 | | 55.6 | | 58.5 | | 51.8 | | 49.9 |
| Voting-age Population1 | | 25.0 | 26.2 | 27.5 | 29.5 | 31.9 | 33.4 | 34.6 | 36.2 | 37.7 | 39.3 | 41.0 | 42.1 | 43.7 | 45.5 |
| School Years Completed | 8 Years Or Less | Congressional Election Years | Percent Reporting They Registered | | 54.1 | | 53.2 | | 52.3 | | 50.5 | | 44.0 | | 40.1 | | 40.2 | |
| Percent Reporting They Voted | | 34.4 | | 34.6 | | 35.7 | | 32.7 | | 27.7 | | 23.2 | | 24.6 | |
| Presidential Election Years | Percent Reporting They Registered | 61.5 | | 54.4 | | 53.0 | | 53.4 | | 47.5 | | 43.9 | | 40.7 | | 36.1 |
| Percent Reporting They Voted | 47.4 | | 44.1 | | 42.6 | | 42.9 | | 36.7 | | 35.1 | | 28.1 | | 26.8 |
| Voting-age Population1 | 28.1 | 24.4 | 24.9 | 23.6 | 22.7 | 22.4 | 20.6 | 19.6 | 19.1 | 17.7 | 15.4 | 14.7 | 14.1 | 13.3 | 12.9 |
| College5 | 1 To 3 Years5 | Congressional Election Years | Percent Reporting They Registered | | 66.9 | | 68.7 | | 70.0 | | 70.0 | | 68.7 | | 68.4 | | 68.3 | |
| Percent Reporting They Voted | | 49.6 | | 51.5 | | 53.3 | | 49.9 | | 50.0 | | 49.1 | | 46.2 | |
| Presidential Election Years | Percent Reporting They Registered | 81.7 | | 75.2 | | 74.4 | | 75.7 | | 73.5 | | 75.4 | | 72.9 | | 70.0 |
| Percent Reporting They Voted | 74.9 | | 68.1 | | 67.2 | | 67.5 | | 64.5 | | 68.7 | | 60.5 | | 60.3 |
| Voting-age Population1 | 19.3 | 23.7 | 23.6 | 25.1 | 26.7 | 28.8 | 30.9 | 33.0 | 34.3 | 36.3 | 46.75 | 50.4 | 50.9 | 52.9 | 55.3 |
| 4 Years Or More6 | Congressional Election Years | Percent Reporting They Registered | | 76.0 | | 76.9 | | 79.4 | | 77.8 | | 77.3 | | 76.3 | | 75.1 | |
| Percent Reporting They Voted | | 61.3 | | 63.9 | | 66.5 | | 62.5 | | 62.5 | | 63.1 | | 57.2 | |
| Presidential Election Years | Percent Reporting They Registered | 87.8 | | 83.7 | | 84.3 | | 83.8 | | 83.1 | | 84.8 | | 80.4 | | 77.3 |
| Percent Reporting They Voted | 83.6 | | 79.8 | | 79.9 | | 79.1 | | 77.6 | | 81.0 | | 73.0 | | 72.0 |
| Voting-age Population1 | 15.9 | 19.8 | 20.2 | 22.2 | 24.0 | 26.9 | 28.6 | 31.3 | 33.6 | 35.6 | 37.46 | 39.4 | 42.5 | 45.4 | 48.0 |
| High School7 | 1 To 3 Years7 | Congressional Election Years | Percent Reporting They Registered | | 54.3 | | 52.9 | | 53.3 | | 52.4 | | 47.9 | | 44.7 | | 43.4 | |
| Percent Reporting They Voted | | 35.9 | | 35.1 | | 37.7 | | 33.8 | | 30.9 | | 27.0 | | 25.0 | |
| Presidential Election Years | Percent Reporting They Registered | 63.0 | | 55.6 | | 54.6 | | 54.9 | | 52.8 | | 50.4 | | 47.9 | | 45.9 |
| Percent Reporting They Voted | 52.0 | | 47.2 | | 45.6 | | 44.4 | | 41.3 | | 41.2 | | 33.8 | | 33.6 |
| Voting-age Population1 | 22.3 | 21.7 | 22.2 | 22.3 | 22.5 | 22.3 | 22.1 | 21.4 | 21.1 | 21.0 | 21.07 | 20.7 | 21.0 | 21.0 | 20.1 |
| 4 Years8 | Congressional Election Years | Percent Reporting They Registered | | 61.9 | | 62.0 | | 62.9 | | 62.9 | | 60.0 | | 58.9 | | 58.6 | |
| Percent Reporting They Voted | | 44.7 | | 45.3 | | 47.1 | | 44.1 | | 42.2 | | 40.5 | | 37.1 | |
| Presidential Election Years | Percent Reporting They Registered | 74.0 | | 66.9 | | 66.4 | | 67.3 | | 64.6 | | 64.9 | | 62.2 | | 60.1 |
| Percent Reporting They Voted | 65.4 | | 59.4 | | 58.9 | | 58.7 | | 54.7 | | 57.5 | | 49.1 | | 49.4 |
| Voting-age Population1 | 50.7 | 51.7 | 55.7 | 58.4 | 61.2 | 65.2 | 67.8 | 68.6 | 70.0 | 71.5 | 65.38 | 64.9 | 65.2 | 65.6 | 66.3 |
| Unemployed | Congressional Election Years | Percent Reporting They Registered | | 44.4 | | 44.1 | | 49.8 | | 50.6 | | 44.6 | | 46.4 | | 48.5 | |
| Percent Reporting They Voted | | 28.8 | | 27.4 | | 34.1 | | 31.2 | | 27.9 | | 28.3 | | 28.4 | |
| Presidential Election Years | Percent Reporting They Registered | 58.7 | | 52.1 | | 50.3 | | 54.3 | | 50.4 | | 53.7 | | 52.5 | | 46.1 |
| Percent Reporting They Voted | 49.9 | | 43.7 | | 41.2 | | 44.0 | | 38.6 | | 46.2 | | 37.2 | | 35.1 |
| Voting-age Population1 | 3.7 | 5.0 | 6.4 | 4.9 | 6.9 | 10.8 | 7.4 | 6.6 | 5.8 | 6.7 | 8.3 | 6.5 | 6.4 | 5.2 | 4.9 |
| Voting-age Population1 | Total2 | 136.2 | 141.3 | 146.5 | 151.6 | 157.1 | 165.5 | 170.0 | 173.9 | 178.1 | 182.1 | 185.7 | 190.3 | 193.7 | 198.2 | 202.6 |
| White | Congressional Election Years | Percent Reporting They Registered | | 63.5 | | 63.8 | | 65.6 | | 65.3 | | 63.8 | | 64.2 | | 63.9 | |
| Percent Reporting They Voted | | 46.3 | | 47.3 | | 49.9 | | 47.0 | | 46.7 | | 46.9 | | 43.3 | |
| Presidential Election Years | Percent Reporting They Registered | 73.4 | | 68.3 | | 68.4 | | 69.6 | | 67.9 | | 70.1 | | 67.7 | | 65.6 |
| Percent Reporting They Voted | 64.5 | | 60.9 | | 60.9 | | 61.4 | | 59.1 | | 63.6 | | 56.0 | | 56.4 |
| Voting-age Population1 | 121.2 | 125.1 | 129.3 | 133.4 | 137.7 | 143.6 | 146.8 | 149.9 | 152.9 | 155.6 | 157.8 | 160.3 | 162.8 | 165.8 | 168.7 |