As OP mentioned, it’s not relevant since he retired, but the seat becomes vacant for a period, meaning one fewer member votes, and results may be affected. There’s generally some mechanism for filling the vacant seat, which can vary on timing (and state law). Generally a replacement can be appointed by the state governor, special elections are held if there is still a substantial term remaining, or the position is held by the appointee if an election is already imminent.
As OP mentioned, it’s not relevant since he retired, but the seat becomes vacant for a period, meaning one fewer member votes, and results may be affected. There’s generally some mechanism for filling the vacant seat, which can vary on timing (and state law). Generally a replacement can be appointed by the state governor, special elections are held if there is still a substantial term remaining, or the position is held by the appointee if an election is already imminent.