Democratic Assemblyman Brian Kavanagh on Wednesday launched his campaign for the soon-to-be vacant Senate seat of Daniel Squadron, who is leaving office at the end of the week.

“I am running for State Senate to fight for our communities in Manhattan and Brooklyn and create the progressive, reform-minded Senate that New Yorkers deserve,” Kavanagh said in a statement.

“For 11 years in the Assembly, I have advocated for my constituents and stood up when government in Albany has failed to function as it should. As a State Senator, I will fight for the things that matter to New Yorkers: strengthening rent laws and preserving affordable housing, increasing access to quality schools, safeguarding the environment, promoting economic and social justice, preventing violence in our communities, and creating a fairer and more accessible political process.”

Kavanagh has been an increasingly influential member of the chamber and was among the Democratic lawmakers who negotiated the passage of the SAFE Act, a package of gun control measures. He was also briefly considered a potential candidate to replace Sheldon Silver as speaker of the Assembly.

The Senate district includes parts of lower Manhattan and Brooklyn. Those also interested in running include Lincoln Restler, an aide in the de Blasio administration, and Assemblywoman Yuh-Line Niou, who holds the seat once represented by Silver.