How about them polls by CNN, ABC, and the Washington Post? c.i.
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c.i.:
Read the "fine print" at the conclusion of even finer print, that's footnoted with MOST polls: they rely on "Zogby," for the most part (CNN, ABC primarily -- both of which networks are owned by those who are Republican Party funders -- and, Editorial Director of CNN used to be Rush Limbaugh's Manager, among other horrible affiliations [horrible to my way of reasoning]).
Once you realize who's behind the "polls" and the very bias of the news that's "reported" and how it's "reported" (it always serves a purpose in the mind and perceptions of whoever edits the material), you get to see a political bias at work.