There is also an art of making opinion polls say what you want them to say, e.g. by asking a biased question, sampling a demographic known to skew a certain way

There is also an art of making opinion polls say what you want them to say, e.g. by asking a biased question, sampling a demographic known to skew a certain way or using a method that largely may exclude certain demographics. (E.g. internet polling) On top of that, there will be selection bias in what polls are published. If the poll you've paid for does not support your narrative, there is no reason to publish it. Polls are therefore often skewed one way or another, and should probably only rarely be used as support for what the general population wants. At least when the margins are small. Especially if paid for by an organization with stakes in the question.