Op-Ed: Don’t let Ocasio-Cortez’s win fool you. Democrats should keep calm and cater to the center

Four months before the November election, Democrats are anxious and divided. They’re worried about polls forecasting that the battle for Congress will be tight, not the “blue wave” blowout they dreamed of. They’re divided over what their core message should be: radical resistance to President Trump or a more moderate pitch to voters in the center.