If a vacancy occurs before the expiration of any term of office, the Commissioner shall fill such vacancy within 30 days after the vacancy by a special election held to elect a member for the unexpired term.

Code 1950, § 3-514; 1958, c. 148; 1964, c. 578; 1966, c. 702, § 3.1-634; 1974, c. 601; 1985, c. 448; 1999, c. 793, § 3.1-634.1; 2004, c. 214; 2008, c. 860; 2016, c. 565.