What do the polls mean?

Polling numbers can range drastically from poll to poll, sometimes showing one presidential contender far ahead of the other while another shows the two neck-and-neck. How do you know what to believe?
Polling numbers can range drastically from poll to poll, sometimes showing one presidential contender far ahead of the other while another shows the two neck-and-neck. How do you know what to believe?

Clinton surges to big lead in McClatchy-Marist poll

August 04, 2016 04:28 PM