HUFFPOLLSTER: There's Been A Surge In Polls During 2016

This year's campaign may be the most-polled in history. We’re getting more clues as to why some online polls are more accurate than others. And we've rounded up a sampling of what we learned from the American Association for Public Opinion Research conference this year. This is HuffPollster for Monday, May 16, 2016.

THERE WERE A LOT OF PRIMARY POLLS THIS YEAR - If it seems like there were a lot more primary polls this year than in the past, there were, as we showed in a presentation Saturday at the annual American Association for Public Opinion Research (AAPOR) conference.. As of April 30, there were 355 publicly-released national GOP primary polls in the HuffPost Pollster database, an increase of 37 percent over the 2012 national GOP primary poll total in the same time period. (We can’t compare Democratic primary polling to 2012 since there wasn’t a contested primary.) The increase isn’t because the 2016 race went on longer -- Mitt Romney was battling for the nomination through April of 2012.