One may think that the sensational events of the past week, such as the release of the Donald Trump recording and his ferocious performance in the last debate, would cause major swings in public opinion in support between the two candidates. But in the past, polls seem to shift by only small amounts even with major news breaking and it is not clear that those movements were due to any actual events like debates or are due to random drifts. The latest polls do seem to show more significant shifts with a large drop in support for Trump but if the past is any indication, we may see a regression to the mean and the gap with Hillary Clinton closing again.
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