The General Assembly shall, by general law, provide a means whereby the sense of the people of any county, city, town, district or precinct may be taken, as to whether or not spirituous, vinous or malt liquors shall be sold, bartered or loaned therein, or the sale thereof regulated. But nothing herein shall be construed to interfere with or to repeal any law in force relating to the sale or gift of such liquors. All elections on this question may be held on a day other than the regular election days.