The third-largest city in Pennsylvania, Allentown, now has a majority of Hispanic residents, a demographic shift that’s given fresh importance here to one of the big issues in the presidential election: immigration and securing the southern border. In the final stretch of the campaign, both Vice President Kamala Harris and former President Donald Trump have visited the city and the surrounding Lehigh Valley, which is considered a key swing area in this battleground state. For our “Chasing the Vote” series, WSJ political reporter Jimmy Vielkind spoke with residents around the valley, including immigrants, to see how candidates’ talk about the border is driving voters and how the issue is playing a central role in the local Congressional race between Democrat Susan Wild and Republican Ryan Mackenzie. Plus, United Auto Workers President Shawn Fain weighs in on how Democrats are framing the discussion about newly arrived workers. Learn more about your ad choices. Visit megaphone.fm/adchoices