Nate Silver, statistician and election forecaster, told ABC News that election forecasts that gave Hillary Clinton a 99% of chance of winning didn't "pass a common sense test." That is certainly true. What he left unsaid -- possibly because it wouldn't be good for his career -- is that all election forecasts that provide a "chance of winning" don't pass the science test.
What is a scientific poll? First, it is a misnomer. There is nothing scientific about a poll. Second, it is conducted using sound statistical techniques. What's more, savvy politicos know that not just any poll will do.