@jalefkowit As someone who used to be involved with a political party, yep. There is an astounding amount of information in public records. Saw all the information they talk about having access to and a lot more.
One bonus if you live in a place with vote-by-mail/early voting - campaigns get updates every day on which voters have turned in their ballots. They don’t waste time on people who have already turned theirs in - so you can significantly cut down on political calls/texts/mail by turning in your ballot as early as possible.