Assemblymember Carroll has been a leader in the Assembly on a host of issues- from authoring a portion of the landmark Climate Leadership and Community Protection Act and advocating for its passage to sponsoring and passing two property tax abatement bills for solar energy, including the first in the nation abatement for solar energy storage equipment or batteries. He was also the author and prime sponsor of the Low Embodied Carbon Concrete Leadership Act, a first in the nation bill to use the state's purchasing power to prioritize lower carbon concrete. Carroll is the prime sponsor of the New York Build Public Renewables Act, which would allow the New York Power Authority to take the lead in building, operating, and owning renewable energy projects in New York State and require all state-owned buildings to be powered by renewables by 2030 and municipally owned buildings by 2035.

Assemblymember Carroll is the leading literacy advocate in the legislature. His Dyslexia Task Force Act, which establishes an expert panel to create standards for universal screening for dyslexia, evidence-based literacy interventions and professional development for teachers, is the first major piece of dyslexia and literacy legislation ever passed by the legislature.

As a former election lawyer and member of the Election Law committee, Assemblymember Carroll has worked to reform New York's antiquated voting laws by authoring multiple election law bills that have passed both the Senate and Assembly. In 2022 his bills to lower the deadline to register to vote to 10 days prior to an election and his 'wrong church' bill, which stops the invalidation of otherwise valid ballots because a voter appeared at the wrong polling site but the right county and assembly district, passed in both houses of the legislature. He is also the prime sponsor of the constitutional amendment for same day voter registration.

A leading transportation and safe streets advocate, Assemblymember Carroll successfully advocated for a dedicated funding stream to fully fund the MTA, passed legislation to take dangerous drivers off the road, and passed the MTA Open Data Act, to bring more transparency to the MTA. Assemblymember Carroll was born and raised in the 44th Assembly District in Brooklyn and attended PS 230 in Kensington as a child. He is a graduate of SUNY Binghamton and has a J.D. from New York Law School. He currently resides in Park Slope with his wife Virginia and their son Teddy.