During those elections you were voting for local party picks that all had the same instructions from the party. Who won had no effect on how things were run. The high ups in the party controlled how the means of production were used, not the workers. As you may recall from your own link factions in the party were banned meaning dissent got you ousted.
Elections that don't give workers any control over the means of production are meaningless and not socialism. How many times do I have to repeat this?