No ballot properly marked by the voter shall be rejected:
 1. Because of any discrepancy between the printed ballot and the nomination paper, or certificate of nomination, or certified abstract of the canvassing board.
 2. Because of any error in stamping or writing the endorsement thereon by the officials charged with such duties.
 3. Because of any error on the part of the officer charged with such duty in delivering the wrong ballots at any polling place.