For nearly three hours, same-sex marriage supporters gathered on the steps of the Federal Building in Harrisburg. The rally coincided with the U.S. Supreme Court's history-making challenges to the legal definition of marriage.
At times the crowd of nearly 100 demonstrators chanted, "Say no to Prop 8," California's ban on gay marriage. Many held signs showing their support.
Organizers said there is a lot at stake for Pennsylvanians.
"It (the U.S. Supreme Court) could really break down all the marriage equality here in Pennsylvania as well as all the other 50 states," rally organizer Chris Dietz said.
The rally was organized by Marriage Equality for Pennsylvania. There was another similar event in Lancaster Tuesday night as well.
Michael Geer with Pennsylvania Family Institute, a group that stands against same-sex marriage, attended a different type of rally in Washington, D.C. on Tuesday. That event was called the March for Marriage.
"(It's) standing up to say marriage is about children, marriage is about the well being of our society and should remain the union of husband and wife," Geer said. "It was heartening to be down there. We are excited and are hoping for a good decision from the Supreme Court."
The U.S. Supreme Court is expected to make its rulings at the end of June.