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