[11] According to The Guardian, Gianaris was principally responsible for scuttling a proposal to locate Amazon's HQ2 in New York City.

[13] Gianaris ran for Attorney General of New York in 2018, but ended his campaign in May 2018 and endorsed fellow Democrat Letitia James.

Gianaris cited this as their commitment to advocating for additional resources to schools amidst concerns about increases in anti semitic attacks from the Israel-Palestine tensions.

[16] In September 2023, governor Kathy Hochul signed his senate bill to expand early mail-in voting for all New Yorkers.

He stated their reaction of her reversal "This whole thing was just dropped on us just yesterday and to expect us to have serious, substantive, deliberative discussion on such an important issue in 24 hours is unrealistic" and that "We put the burden on New York City to bail out the MTA just last year with this exact tax and I don’t think many of us who represent the city support doing it again".

[24] In response to the Murder of Ahmaud Arbery, Gianaris called for the repeal of Citizen's arrest law in New York as a local prosecutor initially declined to bring charges because they thought the killer of Arbery was acting in accordance with Citizen's arrest law in Georgia.