For political spam I have a rule that I refuse to vote for any candidate who directly or indirectly sends me a text asking for their vote. If everyone did that, perhaps fewer politicians would go this route.
It's really bad, and to this point is just something "everyone does". So it just immediately gets deleted and reported as junk and I move on. The bigger question for me is how effective this type of marketing actually is because I can't imagine it is.
Besides which, I never share values with the candidates for national office anyways. Nobody is willing to actually protect civil liberties any more, and I'm not going to vote for someone who will take away my freedom when it's politically expedient.
Many super nerdy online people profess to die on various molehills. Fortunately, they don’t represent a lot of volume.