John Fund of National Review Online explores progressives’ approach to beating President Trump in 2020.

This month, Netroots Nation met in Philadelphia. The choice was no accident. Pennsylvania will probably be the key swing state in 2020. Donald Trump won it by only 44,000 votes or seven-tenths of a percentage point. He lost the prosperous Philadelphia suburbs by more than Mitt Romney did in 2012 but more than made up for it with new support in “left behind” blue-collar areas such as Erie and Wilkes-Barre.

You’d think that this history would inform activists at Netroots Nation about the best strategy to follow in 2020. Not really. Instead, Netroots events seemed to alternate between pandering presentations by presidential candidates and a bewildering array of “intersectionality” and identity-politics seminars. …

… It is true that a couple of panels tried to address how the Left could appeal to voters who cast their ballots for Barack Obama in 2012 but switched to Trump in 2016. “How’d we lose the working class? Ask yourself, what did we do for them?” asked Rick Smith, a talk-show host who explores labor issues. …

… But that kind of introspection was rare at Netroots Nation. Elizabeth Warren explicitly rejected calls to keep Democrats from moving too far to the left in the next campaign: “The progressive agenda is America’s agenda, and we need to get out there and fight for it!”

Warren and her supporters point to polls showing that an increasing number of Americans are worried about income inequality, climate change, and America’s image around the world. But are those the issues that actually motivate people to vote, or are they peripheral issues that aren’t central to the decision most voters make?