Polling

HUFFPOLLSTER: How The Senate Polls Could Be Wrong:

HOW POLLS COULD ERR - With less than a week remaining before Election Day, HuffPost's poll tracking model continues to report roughly the same forecast for control of the U.S. Senate as it has for the past two weeks: The polling averages show Republicans leading at least nominally in enough states to gain a 53-seat majority. The margins remain close enough, however, that the overall probability of a Republican majority is just 63 percent as of this writing. In other words, polling shows the Senate battle leaning Republican, but there is still a real potential that Democrats could hang on due to late shifts or polling errors. So how could these polling averages be wrong?...