Brabenec was chosen in a special election held November 2014 to fill the remaining term of Assemblywoman
Annie Rabbitt, who had resigned to become
Orange County Clerk. Brabenec was concurrently elected to serve a full two-year term starting January 2015. He won re-election to a second term in 2016 with 59% of the vote, to a third term in 2018 with 63% of the vote, ran unopposed for a fourth term in 2020, to a fifth term in 2022 with 64% of the vote, and to a sixth term running unopposed in 2024. Brabenec formerly served as the
ranking minority member of the Labor Committee, and is currently a member of the committees on
Rules, Labor, and Election Law. On January 1, 2019, Brabenec was appointed
assistant minority whip, a leadership position within the Assembly Republican Minority Conference, by then-Minority Leader
Brian Kolb. On January 1, 2021, Brabenec was appointed
deputy minority whip, a leadership position within the Assembly Republican Minority Conference, by Minority Leader
Will Barclay. On January 1, 2023, Brabenec was appointed
minority whip, a leadership position within the Assembly Republican Minority Conference, by Minority Leader
Will Barclay. On January 1, 2025, Brabenec was appointed
Ranking member of the Committee on Standing Committees, a high-ranking leadership position within the Assembly Republican Minority Conference, by Minority Leader
Will Barclay. On February 13, 2026, Brabenec was appointed
Assistant Minority Leader, a top leadership position within the Assembly Republican Minority Conference, by Minority Leader
Ed Ra. ==Consideration to run for NY State Senate==