Though by no means a perfect instrument, polls make it possible for more opinions, held by a broader and more representative range of citizens, to be known to the government and thus, potentially, heeded.
As in two preceding tests, a new survey shows that including cell phone interviews results in slightly more support for Obama and slightly less for McCain.
The latest Pew Research Center national survey, including a sample of 503 adults on a cell phone, finds that the overall estimate of voter presidential preference is modestly affected by whether or not the cell phone respondents are included.
The Pew Research Center has been studying the challenge to survey research posed by the growing number of wireless-only households. Here's a summary of its latest findings.
Survey research firms face increasingly high non-completion rates. Analysis based on extra efforts to reach non-responders finds few differences between the responses of the easy- and hard-to-reach.
A new Pew study finds that on key political measures such as presidential approval, Iraq policy, presidential primary voter preference and party affiliation, respondents reached on cell phones hold attitudes very similar to those reached on landline telephones.
Several factors deserve exploration, but one should not ignore the possibility of the longstanding pattern of pre-election polls overstating support for black candidates among white voters, particularly white voters who are poor.
From holiday distractions to winter weather, the people who will be measuring voters' preferences in primaries and caucuses around the nation will be dealing with unprecedented problems. Here's how they plan to do it.
The landline-less are different from regular telephone users in many of their opinions and their numbers are growing fast. Can survey researchers meet this challenge?
As the number of declared presidential candidates grows, followers of early poll readings should bear in mind some caveats. Early frontrunners for the Republican nomination in most of the past seven open contests have gone on to win the nomination, but this year there are two GOP frontrunners instead of one clear leader. On the Democratic side, even when there is a clear frontrunner as there is this year with Sen. Hillary Clinton, the early polls have been less reliable in predicting who will capture the nomination.