Only 10% turnout, in the Bronx, which is usually the most heavily Democratic County in the entire country. NYC is a hotbed of hard core communists, and it would be easy for them across the city to hop the subway and vote for a comrade in the Bronx, if the Party asked. It might indicate a trend, but it is more likely to be an outlier.
“All one has to do is walk at the most 3 blocks to their voting precinct.”
We are talking about Democrats here - voting in other people’s precincts. Communists from all over the Bronx, Brooklyn, Manhattan and Queens could turn out for a bit of voter fraud to get one of their own elected - without needing to organize buses for them.