The Census has good data on this: https://www2.census.gov/programs-surveys/cps/tables/p20/577/... [XLS]
A shift in the demographics of voters influences change.
https://www.census.gov/content/dam/Census/library/publicatio...
Even if that's true, I think 100% voting is a worthwhile goal, because it removes any doubt. If voting is already perfectly representative, then nobody should have a problem with this initiative, because it would change nothing.
are we aligned on the understanding that representative sample means a reflection of the random population? As in not a representative proportion of all subsets, but just what you might see in a random place in the country.
I mentioned to you or in another subthread that a shift in the voter demographics can effect change.
Some people, and their entities, are more influential than others and will always be. The popular vote has limited utility.
This observation has nothing to do with alternative forms of governance. This observation is simply that here and now, there are better rules you can play by than even caring about the popular vote one bit.