Peters, 41, has been SHA administrator for the last 31/2 years, appointed under Gov. Martin O'Malley, a Democrat. Smith also was appointed by O'Malley, in 2013, to his second stint as head of the MTA. He had previously been named to the position by Gov. Parris N. Glendening, a Democrat, and removed by Glendening's successor, Gov. Robert L. Ehrlich Jr., a Republican.