All elections for the State's Attorney shall be certified to, and Returns made thereof, by the Clerks of the said Counties and City, to the Judges thereof, having criminal jurisdiction, respectively, whose duty it shall be to decide upon the elections and qualifications of the Persons returned; and, in case of a tie between two or more Persons, to designate which of said persons shall qualify as State's Attorney, and to administer the oaths of office to the Person elected.