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?
Up Next
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’s lead over Trump shrinks dramatically

July 13, 2016 06:00 AM