John A. Keith is a resident of Provincetown, Massachusetts after having lived in Boston, Massachusetts since 1989. Born and raised in Massachusetts, he is a graduate of Northeastern University in Boston, Massachusetts.
Keith was a non-party candidate for Massachusetts State Representative (3rd Suffolk) in 2009 and for Suffolk County (MA) Register of Deeds in 2016. He was elected to the Charter Compliance Commission in Provincetown in 2023.