President Biden and Vice President Harris will travel to Philadelphia on Wednesday to launch “Black Voters for Biden-Harris,” the latest sign that their campaign is trying to shore up its support with a crucial constituency.

The rally, to be held at a mostly Black school in the city, will feature top Black leaders from across the country, who will join Biden to draw a sharp contrast with his Republican rival, former president Donald Trump. Biden will also visit a Black-owned small business and meet with local volunteers, campaign officials said.