Municipalities are terrified of 1A litigation, so they’ll try desperately hard to avoid enforcement of their very-constitutional sign ordinances. I had convo about it with a solicitor a couple of years ago. He agreed that the ordinance governing temporary signs was enforceable against political signs that stay out too long or are too big, but that it would be up to me to file a writ of mandamus if I wanted them to enforce it. The politically mixed panel of supervisors were unanimous about not wanting it enforced against political signs.