The commissioner shall, at county expense, perform the duty specified in section 43.8 , as to all offices for which nomination papers are required to be filed in the commissioner’s office. [S13, §1087-a11; C24, 27, 31, 35, 39, § 535; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §43.9 ]