If there shall not be election commissioners in any county, or if they fail to act, the duties prescribed for them shall be performed by the board of supervisors. In such case, the president of the board is charged with the duty of having the official ballot printed and distributed; and the poll managers shall make returns to the board, which shall canvass the returns, give certificates of election, and make report to the Secretary of State, in like manner as the election commissioners are required to do.