I didn’t get it wrong. I nailed it.
Not me. I was expecting a landslide for Trump.
Because every poll I saw was based on “likely voters” which is defined as people who intended to vote and had actually voters in the last two general elections. That was clearly leaving out all those newly registered voters and the millions who said they would be voting for the first time in years. They had ample evidence in the Primaries that this left a big hole in their “likely voters” methodology, but they ignored it. I figured that was good for 3% added to Trump’s poll numbers.