Any person who shall give, or promise or offer to give, to an elector, any money, reward or other valuable consideration for his vote at an election, or for withholding the same, or who shall give or promise to give such consideration to any other person or party for such elector's vote or for the withholding thereof, and any elector who shall receive or agree to receive, for himself or for another, any money, reward or other valuable consideration for his vote at an election, or for withholding the same, shall thereby forfeit the right to vote at such election, and any elector whose right to vote shall be challenged for such cause before the election officers, shall be required to swear or affirm that the matter of the challenge is untrue before his vote shall be received.