AUGUSTA — Sen. David Trahan, R-Waldoboro, officially stepped down from his seat Dec. 31, leaving the 35-member Senate short one member on the opening day of the new legislative session.

Trahan, who took a job last year as executive director of the Sportsman’s Alliance of Maine, announced several months ago that he would resign before the new session began. A letter he submitted to Senate President Kevin Raye, R-Perry, appears on today’s Senate calendar.

In the letter, Trahan indicated that he had officially started his new job, which will require him to lobby legislators on fish and wildlife bills. He was the Senate chairman of the Taxation Committee and will be replaced on that committee by Senate Majority Leader Jonathan Courtney, R-Springvale.

A special election to fill the seat will likely be held early this year. All legislative seats will go before voters in November.