Why would Cav change his mind, Social Media is an echo chamber, we only like what is the same as we like, no one changes their minds, Steve you won't change yours.
Politics and even morals are subjective and are defined by people. Why would Cav think that for example censoring Trump is bad?
Most of us agree Trump is an arsehole and should be in prison, but we won't convince anyone else of that,
Look at the percentage of people/states that change their votes, it's not big. It's not a landslide.
Political parties I know, speaking from experience, usually have a strategy to change 10-20 seats, swing seats, seats that might change, who's winner is there by a thread, that's it. the whole of elections are about those few people