The governor may remove any county road commissioner when he shall be satisfied from sufficient evidence submitted to him, as hereinafter provided, that such officer has been guilty of official misconduct, or of wilful neglect of duty, or of extortion, or habitual drunkenness, or has been convicted of being drunk, or whenever it shall appear by a certified copy of the judgment of a court of record of this state that such officer, after his election or appointment, shall have been convicted of a felony; but the governor shall take no action upon any such charges made to him against any such officer until the same shall have been exhibited to him in writing, verified by the affidavit of the party making them, that he believes the charges to be true. But no such officer shall be removed for such misconduct or neglect until charges thereof shall have been exhibited to the governor as above provided and a copy of the same served on such officer and an opportunity given him of being heard in his defense: Provided, That the service of such charges upon the person or persons complained against shall be made by handing to such person or persons a copy of such charges, together with all affidavits or exhibits which may be attached to the original petition if such person or persons can be found; and if not, by leaving a copy at the last place of residence of such person or persons, with some person of suitable age, if such person can be found; and if not, by posting it in some conspicuous place upon his last known place of residence. No officer who has been removed in accordance with the provisions of this section shall be eligible to election or appointment to any office for a period of 3 years from the date of such removal.