North Dakota Constitution Art. IV, § 9

If any person elected to either house of the legislative assembly shall offer or promise to give his vote or influence, in favor of, or against any measure or proposition pending or proposed to be introduced into the legislative assembly, in consideration, or upon conditions, that any other person elected to the same legislative assembly will give, or will promise or assent to give, his vote or influence in favor of or against any other measure or proposition, pending or proposed to be introduced into such legislative assembly, the person making such offer or promise shall be deemed guilty of solicitation of bribery. If any member of the legislative assembly, shall give his vote or influence for or against any measure or proposition, pending or proposed to be introduced into such legislative assembly, or offer, promise or assent so to do upon condition that any other member will give, promise or assent to give his vote or influence in favor of or against any other such measure or proposition pending or proposed to be introduced into such legislative assembly, or in consideration that any other member hath given his vote or influence, for or against any other measure or proposition in such legislative assembly, he shall be deemed guilty of bribery. And any person, member of the legislative assembly or person elected thereto, who shall be guilty of either such offenses, shall be expelled, and shall not thereafter be eligible to the legislative assembly, and, on the conviction thereof in the civil courts, shall be liable to such further penalty as may be prescribed by law.