Background
Carrigan was born on April 25, 1941 in Malden, Massachusetts.
Carrigan was born on April 25, 1941 in Malden, Massachusetts.
He graduated from Saint Mary"s High School and Suffolk University and went on to work as a teacher.
In 1970, Carrigan was elected to the Massachusetts House of Representatives. Carrigan later returned to Suffolk and earned a Juris Doctor from the Suffolk University Law School. He was admitted to the Massachusetts bar in 1977.