Zohran Mamdani, a 33-year-old state assemblyman, galvanized voters with an energetic campaign focused on affordability. Former Gov. Andrew Cuomo left the door open to running in the general election.

Climate change is increasingly making weather extremes more common.

Nassau County forged a partnership with federal immigration officials to give police officers the power to conduct migrant arrests.

Mr. Weiner returned from a prison term to launch an unlikely campaign for the City Council. Outside a polling place on Tuesday, it was hot, mostly friendly and a little awkward.

A winner on Tuesday night is unlikely, but not impossible. Ranked-choice voting will play a big role in the outcome. Here’s what else you should look for as votes are counted.

Here’s what to know about the primary election for mayor and a number of other posts, which will take place on the hottest day of the year so far.