Relying on your own graphs, between 1987 and 2015,
the population of eligible voters has more than doubled from ~ 1800 to ~ 4700: an increase of ~ 161 % by adding ~ 2900 new potential voters.
McDonald, instead, uses the total
population of eligible voters in each state drawn from administrative records.
Not exact matches
McDonald used voting -
eligible population (VEP), or the number
of eligible voters independent
of their current registration status, to calculate turnout rates in each state on November 4.
In 2016, the Supreme Court asserted that legislative districts should be drawn to include all people living within them, regardless
of citizenship status, rather than based solely on the
eligible voter population.
The plaintiffs, Sue Evenwel and Edward Pfenninger, argued that district
populations ought to take into account only the number
of registered or
eligible voters residing within those districts as opposed to total
population counts, which are generally used for redistricting purposes.
Also, there are countries where you don't have to register per se, you are either automatically added to the election roll when you turn 18 or the list
of eligible voters is based on a (mandatory)
population register.
Texas currently counts everyone in the state, including illegal immigrants, before carving up districts
of proportional
population size, but the challenge argues that only
eligible voters should be counted because the current system creates some districts with much larger numbers
of eligible voters than others.
The 2014 election had the worst
voter turnout in 72 years, with less than one - third
of the
eligible voting
population going to the polls.
All 50 states use total
population as their basis for drawing district lines, but the challengers said the rural state Senate districts in which they lived had vastly more
eligible voters than urban districts, making their votes count for less, in violation
of the Constitution.