The disabled face significant obstacles to voting in America's political
  system, Stanford expert finds
From: Stanford Report - 05/23/2016

Stanford law scholar Rabia Belt’s new research shows that millions of votes
are lost because the disabled encounter inadequate accommodations at the
polls and legal obstacles regarding mental health.

Some 3 million votes will be lost because citizens with disabilities are less
likely to vote, according to Belt. The situation isn't expected to improve
either: Up to 35 percent of all voters in the next 25 years will need some
form of accommodation.

For example, substandard accommodations at the polls - from inadequate
parking to large crowds and waiting times - are common and often
deal-breakers for disabled voters. On top of this, many states bar people
from voting based on often arbitrary standards about their mental health.

Belt found that inadequate accommodations at the polls - a lack of parking,
large crowds and long waiting times - often keep the disabled from exercising
their votes.

Read the entire article at:
http://news.stanford.edu/2016/05/23/disabled-face-significant-obstacles-voting-americas-political-system-stanford-expert-finds

Links:
Rabia Belt
https://law.stanford.edu/directory/rabia-belt

Contemporary Voting Rights Controversies through the Lens of Disability
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2780693