This was the first matchup between the two programs in 10 years.
The event will have free food, live music and dancing with all ages welcome.
Trump will appear three days before the end of the presidential election.
McCormick is challenging incumbent Democrat Bob Casey for the highly contested Pennsylvania Senate seat.
The Nittany Lions will be hearing "Jump Around" in their sleep after listening to it on repeat in preparation for Saturday night.
In the offseason, Johnson put on 15 to 20 pounds, focusing on building muscle while remaining athletic.