Arkady
President
The polling data held up as well as could be reasonably expected. The day before the election, I described myself as "not terribly confident" because the polling average favored Clinton by just 2.5 points, which was well within the margin of error of polling averages historically:tough road here going forward, given that the scientific basis for much of the election data...totally betrayed him..
https://www.politicaljack.com/threads/chelsea-clinton.97271/#post-1739138
The polls had been off by 3.2 points in 2012 (underestimating Obama's support). This year, they did better than that, with Clinton's half-point popular vote victory falling closer to what the polls predicted than Obama's 3.9-point victory had.