Campaign text messages remain cheap and fast, but experts say growing annoyance leads voters to report spam. The Federal Communications Commission exempts political texts from Do Not Call registries, leaving opt-outs to individuals. Campaign text messages and mobile polling requests are flooding phones across the nation as candidates rush to reach voters ahead of upcoming primary elections. Campaign text opt-out rulesWhat we don't know:Federal rules established by the Federal Communications Commission explicitly permit political text messages and exempt them from national Do Not Call registries, but the FCC does regulate how the messages are sent. MacManus warned that clicking links inside campaign messages often triggers additional spam texts.