- 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- I hesitate to reply “stop” because I don’t want them to know this is a live number (is my instinct here outdated/inapplicable?)
For sure don’t in any way respond, just report spam and block the number. Lots of these things are phishing attempts, trying to get you to give personal information (or even money), and aren’t connected to the things they mention.
There’s no “Report Junk” on iOS Messages unless it’s an email address texting you.
Every message I have received on my iPhone from someone not in my contacts has this after that latest message:
Not true—I just successfully reported this text as junk. It tries to auto-detect spam, and coming from an email address is one of the signs of that, but not the only one.