What Trump’s horrific polling actually tells us — and what it doesn’t — about 2020

The polls du jour show President Donald Trump trailing basically every Democrat in the 2020 general election, both nationally and in individual states — even in Texas.

Democratic voters might rejoice at these signs that Trump will be a one-term president. But they should temper themselves: Hillary Clinton was regularly leading Trump by 10 points or more a year ahead of the 2016 election. Polls taken 14 months before an election are simply not predictive. Too much can happen and sentiments can change when the race becomes one specific Democrat...