Conducting a poll isn’t an exact science. The process is susceptible to lots of common problems and baked-in biases — more than just the “margin of error.” By ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Every survey finding published by Pew Research ...

As Americans await the presidential election results, many are looking to the polls for clues. A poll’s margin of error describes how close a survey result can ...

Q: Do the pollsters know who is going to win the election? A. With the number of polls released every day, you would think that there was a definitive assessment on who is going to win the ...