The possibility that the president will seek to intercede could inject an element of unpredictability into an already fractious contest.

The outcome of New York's mayoral election may serve as a litmus test for the future direction of Democratic politics.

New York City health officials are continuing to investigate a cluster of Legionnaires’ disease, a serious bacterial lung infection, where the number of cases has risen to 73, including three deaths.

At least 58 people have fallen ill, including two people who have died, from Legionnaires’ disease in New York City over the past several weeks, according to the city’s health department. City health officials believe that the people most likely became ill after breathing in bacteria sprayed from cooling towers in central Harlem.

Legionnaires' disease is caused by Legionella, a bacteria that can travel through water systems and devices. Although most healthy people don't contract it, it can be deadly for those who do.