Public opinion is a collective attitude or preference concerning political issues shaped by a varied and complex interplay of factors...Polling is a primary means to collect public opinion, and, despite its shortcomings, most agree that polls are invaluable to democratic societies.
Public opinion polls can be simultaneously compelling and off-putting - compelling because they represent a sort of national look in the mirror; off-putting because they're not well understood by many news consumers." ABC News
This guide contains information about public opinion polls, resources for them, and a breakdown of different poll focuses.