I found this in the city code while looking for the “open container” ordinance….

Licensees may sell alcoholic beverages on election days, provided that such sale is not within 250 feet of any polling place or of the outer edge of any building within which such polling place is established on primary or election days. The limitations imposed by this section shall be in effect beginning with the opening of the polls and ending with the closing of the polls.

(Code 1967, § 4-21)