Please DENOUNCE any polls brought to DU that are NOT from reliable

[Eliot Rosewater]

12. They have a clear bias, it is well known

You dont know that?

In 2010, Nate Silver of The New York Times’ blog FiveThirtyEight wrote the article "Is Rasmussen Reports biased?", in which he mostly defended Rasmussen from allegations of bias.[79] However, later in the year, Rasmussen's polling results diverged notably from other mainstream pollsters, which Silver labeled a "house effect."[80] He went on to explore other factors which may have explained the effect such as the use of a likely voter model,[81] and claimed that Rasmussen conducted its polls in a way that excluded the majority of the population from answering.[82]

After the 2010 midterm elections, Silver concluded that Rasmussen's polls were the least accurate of the major pollsters in 2010, having an average error of 5.8 points and a pro-Republican bias of 3.9 points according to Silver's model.[71] Conservative polling analyst Neil Stevens wrote, "after the primaries [Silver] said Rasmussen was in his crosshairs for ducking out on a number of races by not polling primaries."[83] FiveThirtyEight currently rates Rasmussen Reports with a C+ grade and notes a simple average error of 5.3 percent across 657 polls analyzed.[84]

https://en.wikipedia.org/wiki/Rasmussen_Reports

A 2017 article by Chris Cillizza for CNN raised doubts about Rasmussen's accuracy, drawing attention specifically to potential sampling biases such as the exclusion of calls to cell-phones (which, Cillizza argued, tended to exclude younger voters), and also more generally to a lack of methodological disclosure. Cillizza did, however, note in the same piece that Rasmussen was one of the more accurate polling organizations during the 2016 United States presidential election.[95]