Add to the above article and analyze: Given the sample sizes and underlying margins of error in these polls, most of these polls were not that far from the actual result. In only two cases, reports Panagopoulos, was any bias in the poll statistically significant. The Los Angeles Times/USC poll, which had Trump with a national lead throughout the campaign, and the NBC News/Survey Monkey poll, which overestimated Clinton's share of the vote. In other words, most individual polls were pretty accurate which is why the averages were pretty accurate, too. So the graph above doesn't crown any champion. Moreover, comparing the results in 2016 and 2012 suggests that no one pollster was consistently "the best" in both years