The district includes Wakefield, Olinville, Edenwald, Eastchester, Williamsbridge, Baychester, Co-op City in The Bronx.

He graduated from Mount Saint Michael Academy in Wakefield before attending State University of New York at Old Westbury where he received a B.A.

[3] Prior to running for office, Riley was an aide to Assembly Speaker Carl Heastie for ten years.

[5] On December 22, 2020, Riley won a special election in the 12th district following the expulsion of Council Member Andy King.

"[6] Riley outraised his opponents and received a significant amount of endorsements from high-ranking elected official and unions, which some attributed to his close relationship to Assembly Speaker Carl Heastie, one of the most powerful politicians in the State.