As I said in the other thread, this is all public data from various sources (except the modeling). It will be fully filled out.
It's very common for political orgs to have the entire voter file for the US (or be able to query it using SQL)
Seriously.
You could, in the next 10 minutes, go purchase a national voter file with all this info on 190 million plus voters.
Just Google "national voter file purchase".
Those are pre-aggregated, and honestly, really cheap (Usually ~2k).
You can also aggregate it yourself for less if you want.
(not disagreeing, rather I'm seeking information)