- never signed up for anything like this,
- never donated to or signed up for emails from the DNC, et al.,
- political texts like this come all the time, and
- I hesitate to reply “stop” because I don’t want them to know this is a live number (is my instinct here outdated/inapplicable?)
You must have seen the older phishing attempts with caller’s named “Potential Spam”
Not sure if that technique still works but you can still mark callers as junk/spam.