·People with disabilities are on average about 20 percentage points less likely than those without disabilities to vote, and 10 points less likely to be registered to vote (after adjusting for differences in demographic characteristics)
·The voting gap between people with and without disabilities is especially wide among those aged 65 or older
·Low turnout is most likely among individuals who have difficulty going outside alone, and among those with severe visual and mental impairments
·People with disabilities are more likely than those without disabilities to have encountered, or expect, difficulties in voting at a polling place. Of those voting in the past ten years, 8% of people with disabilities encountered such problems compared to less than 2% of people without disabilities. Among those not voting within the last ten years, 27% of people with disabilities would expect such problems compared to 4% of people without disabilities
·If people with disabilities voted at the same rate as those without disabilities, there would have been 4.6 million additional voters in 1998, raising the overall turnout rate by 2.5 percentage points

From D.L. Kruse, K. Schriner, L. Schur, & T. Shields, University of Arkansas-Fayetteville, Empowerment through Civic Participation: A Study of the Political Behavior of People with Disabilities.