As part of a broader campaign strategy, President Trump should go hold rallies right in the heart of Philly, and Detroit and Atlanta and other such places. He’s already polling at 22-23% support among Blacks. Showing up in those places and hitting Biden hard on issues that have directly affected them...the economy, illegal immigration, crime, etc could siphon more votes away from Biden and/or force the Democrats to spend time and money shoring up areas they’ve been able to take for granted for a long time.
NYC now has RCV for a reason...