(WBNG Binghamton) Senator Thomas Libous has resigned his post as head of the Republican Campaign Committee in an announcement Monday from senate president Dean Skelos.
Libous had served as head of the committee since 2009.
He said he is stepping back to focus on his health and district.
"It's a full-time job, you are traveling the state, you're doing a whole host of things," Libous said. "And with some of my issues, and that I returned to chemotherapy, I felt that it would make more sense for me long-term to focus on two things: that's my health and my district and constituents."
He announced this June that he had started chemotherapy treatments for cancer in his lungs.
The 60-year-old senator was given credit for turning the Republican Party around in New York after Democrats took the senate majority in 2008.
The Republicans took back the Senate in 2010, and held on to the chamber in 2012 by forming a coalition with four conservative Democrats.
The senator said he's not considering leaving the senate entirely.
"To anybody who wants to run on the Democratic side, don't think that we're not interested in staying around if the people will have me," he said.
The senator is continuing his role as deputy majority leader of the senate.