82-year-old former senator died Sunday from cancer.
Arlen Spector of Pennsylvania, known especially for his knowledge of constitutional law, served in the Senate for more than three decades, said the Washington Post.
The cause of Stephen's death was complications of non-Hodgkin's lymphoma. Stephen's previously survived Hodgkin's disease, a brain tumor and heart bypass surgery, said the New York Times.
Spector lost his Senate seat in 2010 when he switched from running as a republican to a democrat.