For the first time since 1944 both presidential candidates are from New York City and they will await the election results Tuesday night just 15 city blocks from each other. 
Hillary Clinton, born in Chicago but who made her home New York in 1999, has rented a massive hall in the Javits Convention center on the West Side of Manhattan, near the Hudson River. 
Donald Trump, who was born in the New York City borough of Queens, will watch the returns just 15 blocks away at the Hilton Hotel on Sixth Avenue in Manhattan. 
For the New York City police department the proximity of both political camps within a relatively tight space in Manhattan presents formidable security challenges. 
"Election day, brings with it a unique set of challenges. For the first time in modern memory, both major party candidates will monitor the results here in New York and will have election night parties in midtown Manhattan," New York Police Commissioner James O'Neill said on Monday. 
Over the weekend the police issued a terrorism alert for Monday. But there were no incidents reported anywhere in the country. 
Authorities say more than 5,000 NYPD police officers will be out in force on election night. Many will be undercover. There will also police be special police forces with automatic weapons and bomb-sniffing dogs deployed in the city. 
Passions between competing supporters is also expected to be high, bringing with it the possibility of violence. Some buildings bearing the real-estate developer's signature Trump name have been vandalized, and a huge Trump sign in the borough of Staten Island has been burned. Some Trump supporters around the country have threatened to react violently if they believe Trump is cheated out of the presidency. 
"You have two things going on at once,’’ New York City Mayor Bill De Blasio said. "This campaign has generated particular passion and concern. NYPD has taken into account the historic nature of this night and has really prepared with tremendous force levels at the right locations.’’  Thousands of people are expected to gather in Times Square in the heart of Manhattan to watch the election returns on a giant television screen, much as they gather every year on New Year's Eve to welcome in the new year. 
Police will also be deployed around the 58-story Trump Tower on Fifth Avenue in Manhattan, where Trump has his offices and lives in a penthouse apartment. On Sunday police kept opposing groups of supporters separated outside the tower. 
Both candidates being from New York hasn't happened since Franklin D. Roosevelt defeated New York Governor Thomas Dewey in the 1944 election.

Source: QNA