General Discussion

But here's the link to Ohio's data - available to everyone with internet. It contains name, registration date, birth date, party affiliation, address, and which elections you've voted in (maybe even more information- its been a month or so since I checked). https://www6.ohiosos.gov/ords/f?p=VOTERFTP:HOME::::::

Feel free to download data and check.

Every state has some version of this. How it is accessed varies somewhat by state, but it is publicly available. Those lists are how party get-out-the vote efforts work, postcard campaigns, etc. That's where the data comes from - it isn't just random calls or mailings - voters who vote in the Democratic primary, for example, but don't vote regularly (which can be identified from the party affiliation and the voting record) are targeted for GOTV efforts.