Not just the left and right's echo-chambers, but those who attempt to actually listen to reality got it wrong, too: FiveThirtyEight for example has been using proven, reality-based statistics for a while and should have predicted this result. (As it was, Silver was lambasted for being too generous on Trump's chances.) At issue in this election is apparently a new idea: people who hold positions that are being publica…
Technically, they did predict it: 538 had 35% chance of Trump winning and emphasized the uncertainty factor, while other outlets had Clinton's chances as high as 99%.
Hilarious defence of their work in recent tweet
"Clinton came within 2 points of 307 electoral votes, in which case polls would have been right in 49 of 50 states. "
ie. If the results had been different, our prediction would have been correct.