The general election shall be opened in every election district at 7:
21 Del. Laws, c. 38, § 17; 23 Del. Laws, c. 57; Code 1915, § 1756; 32 Del. Laws, c. 100, § 1; Code 1935, § 1845; 44 Del. Laws, c. 124; 15 Del. C. 1953, § 4931; 50 Del. Laws, c. 22, § 1; 50 Del. Laws, c. 172, § 1.