Whenever, in the investigation of any contested election, whether before any committee of councils, any court of the city and county of Philadelphia, or committee of the senate, or house of representatives, or a joint committee thereof, it shall appear that in any election division of said city, the officers of election shall have wilfully received the votes of ten persons, or upwards, whose names are not contained in the list of taxable inhabitants, furnished to the election officers of such division, by the city commissioners, without requiring proof of the payment of taxes, citizenship and residence, which now are, or hereafter may be, required by law, such dereliction of duty shall be deemed a misdemeanor; upon conviction whereof the said officers of election shall be fined in a sum not exceeding one thousand dollars, and be imprisoned for a period not exceeding two years, both, or either, at the discretion of the court.