Del. Const. art. II, § 20
Any member of the General Assembly who has a personal or private interest in any measure or bill pending in the General Assembly shall disclose the fact to the member’s House and shall not vote thereon.
71 Del. Laws, c. 379 and 72 Del. Laws, c. 136; 84 Del. Laws, c. 281 and 85 Del. Laws, c. 5;