ANKARA, Turkey — The night the Supreme Electoral Council announced it had voided the election for Istanbul’s mayor, a legion of residents in the city banged pots and pans.

It was a throwback to the Gezi Park protests of 2013, when thousands of housewives who could not take to the streets took to their windows to vent their feelings about then-Prime Minister Recep Tayyip Erdogan. A video taken from a high building Monday night recorded a cacophony of cookware from Istanbul’s streets.

The next day, people realized that the day the electoral council had chosen for the re-run election, June 23, would fall one week into the summer holidays. Thousands of middle-class residents, most probably opposition voters, would be far away from Istanbul’s polling stations.

The Aegean island of Bozcaada posted a warning on social media that Istanbulites should not swim in its turquoise waters June 23 because “shark attacks are expected.” Another Aegean resort went one better: “Bodrum will be experiencing heavy snow June 23. We advise you to enjoy the sunshine in Istanbul that day.”