Pennsylvania's Josh Shapiro, Michigan's Gretchen Whitmer, Wisconsin' Tony Evers, New Mexico's Michelle Lujan Grisham, and Maine's Janet Mills made an appearance.
State College and Penn State served as a hotspot for political campaigns last week.
The tour was originally set to stop at the Acacia fraternity.
Ocasio-Cortez rallied for the campaign of Kamala Harris and Tim Walz at the State Theatre on Friday night.
The pair will appear at 8 p.m. at the Bryce Jordan Center.
Ramaswamy monologued about his life and entrance into politics before answering questions from those in attendance.