The vote difference between "Bring in the Wine" and "Flowers on the Spring River by Moonlight" was a mere 11 votes.
Considering the base was nearly 40 million votes, 11 votes against 40 million is such a small proportion that even if the equipment had a margin of error, it wouldn't have been able to display the digits after the decimal point.
This set a new record: the smallest margin in history.
Chapter 305