Joe Biden won the Democratic nomination as a centrist. But his policies have since moved to the left, which raises an important question: Can he still win the independent, centrist, and swing-state voters he’ll need with an agenda that looks more like Rep. Alexandria Ocasio-Cortez’s than his own?

Though Biden’s recent polling has been solid, if he squanders his lead, blue-collar workers in Pennsylvania will likely be one of the reasons why. Biden sold himself to the voters in his home state as a friend of the working class, but his recent climate change initiative, for example, threatens to undermine the support he’s built.