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Mayor Tom Bradley. The Bradley effect, less commonly known as the Wilder effect, [1] [2] is a theory concerning observed discrepancies between voter opinion polls and election outcomes in some United States government elections where a white and a non-white candidate run against each other.
The Trafalgar Group is an opinion polling and survey company founded by Robert Cahaly and based in Atlanta, Georgia. It first publicly released polls in 2016. Trafalgar has been questioned for its methodology and for an apparent bias towards the Republican Party.
That's lower than the statistical bias of the polls in 2016 and 2020, which underestimated Trump by 3.2 and 4.1 points, respectively. ... "It is important in pre-election polling to emphasize the ...
This is a list of nationwide public opinion polls that were conducted relating to the general election for the 2020 United States presidential election. If multiple versions of polls are provided, the version among likely voters (LV) is prioritized, then registered voters (RV), then adults (A).
In the past few days, polls have ranged from a 4-point Harris lead to a 3-point lead for Trump. With such slim margins and changing numbers, what can we trust?
The prevalence of Republican-leaning polls in recent weeks is raising questions about their effect on the overall polling average as the presidential race between Vice President Harris and former ...
The accuracy of Gallup's forecasts indicated the value of modern statistical methods; according to data collected in the Gallup poll, the Literary Digest poll failed primarily due to non-response bias (Roosevelt won 69 percent of Literary Digest readers who did not participate in the poll) rather than selection bias as commonly believed.
Two national polls released Sunday show an ultra-close race with Vice President Kamala Harris just barely in the lead, while a third poll shows her tied with former President Donald Trump. But ...