Rasmussen
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Many people say that Rasmussen polls are biased, leaning to the right, politically. Others say that they are representative of the US population, being a serious and professional polling service with a longstanding record. It has been said that they tend to get different results than other major national US polls. Are they right-biased in their sample of the US population, or are other polls biased? Rasmussen did predict Trump's 2016 win, while other polls failed to predict this.