Longtime Republican Sen. John Bonacic on Friday became the third Republican lawmaker this week to announce his plans to retire from the state Senate.

“I have decided that I will not seek re-election to the New York State Senate,” Bonacic said in an emailed statement. ”

“Next to being called Pat’s husband and Melissa and Scott’s father and a grandfather to three more, serving in the State Senate has been the honor of my life. The twenty years I have spent in the Senate have been rewarding both personally and professionally, despite the frustrations that all of us experience in any career. Twenty years, though, is enough, and I look forward to spending quality time with my bride, Pat, and my children and grandchildren.”

Bonacic, the chairman of the Racing and Wagering Committee, is also considered one of the more moderate members of the Senate GOP conference.

The announcement comes two days after Sen. Kathy Marchione, a Republican who represents the area around the Capital Region, abruptly said she would retire after six years in the Senate. Sen. John DeFrancisco, the deputy majority leader who is suspending his bid for governor, is also not seeking re-election.

Marchione’s seat is considered a safe Republican district, but Bonacic’s district has been one Democrats have eyed for several election cycles, but are yet to flip.

Democrats are counting on a “blue wave” to sweep down-ballot candidates running this year into office and potentially gain a working majority in the state Senate.

Senate Democrats retained two open seats in a Tuesday special election, giving them a numeric 32-member majority in the chamber, but Sen. Simcha Felder will continue to conference with Republicans, keeping the GOP in control.