Regardless of the mode of data collection, public pollsters worth their weight are striving to be accurate, and transparency helps the serious student of public opinion to better understand poll results. But, transparency also feeds the criticism that pollsters are "cooking" their numbers to benefit one candidate or political party. Social media certainly contributes to this hammering. So, we are left with lots of poll numbers which are hopefully developed in an honest attempt to be accurate. In the best of worlds, these public polls present a narrative of the campaign that reflects what is going on. If you want precision in predictions, don't ask public polls to go beyond what they can reasonably do. If you're looking for guarantees, you'll have to look elsewhere.
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