Newly minted Senate Democratic leader Andrea Stewart Cousins will announce today that Sen. Michael Gianaris will be her deputy minority leader. The Queens lawmaker will remain chairman of the Senate Democratic Campaign Committee.

It’s not an entirely surprising development, given that Gianaris has been the public face of the conference over the last session, taking the lead on redistricting and campaign-related issues. Gianaris, rumored to be in line for the conference leader job himself, was a strong backer of replacing Sen. John Sampson of Brooklyn with Stewart-Cousins, a Yonkers Democrat.

He replaces Sen. Neil Breslin of Bethlehem, who had told me in an interview that he was endorsing Gianaris to take the job.

“Senator Michael Gianaris is an incredible public servant, and I am pleased that he will serve as the Deputy Conference Leader for the Senate Democrats,” Stewart-Cousins said in a statement. “During the past election Senator Gianaris led our conference to victories throughout New York State and helped ensure that Democratic Senators were elected despite daunting odds. I look forward to having Senator Gianaris as part of my leadership team.”

Gianaris was first elected to the Senate in 2010, having served for 10 years as a state assemblyman.

“I am honored to be chosen by Democratic Leader Andrea Stewart-Cousins to serve as her Deputy,” said Gianaris in a statement. “There is much work to be done to advance the progressive goals the people of our state demand. I am excited to be a part of Senator Stewart-Cousins’s team and look forward to working in partnership with Governor Cuomo to achieve these goals.”