NEW YORK - Voting started as early as 6am on the east coast, and New Yorker Sean Sullivan made sure he was there early to cast his ballot for the 45th President of the United States.
"I'm voting Democrat up and down the ballot," said Mr Sullivan, 30, a trader, who admits to being an anomaly in his office as most of his colleagues are Republicans.
He added that Mrs Clinton's policies seem sensible but with Mr Trump, "I don't like the language that is being used, the race beating, he's just good at self promotion," he added, as the line behind him grew to over a hundred people.
Some were in sporting attire, others in business suits; all there to exercise their democratic right.
For more than a year, the two major party candidates - Hillary Clinton and Donald Trump - have been duelling it out under harsh public scrutiny, trying to make their case to American voters.
Mrs Clinton has offered voters her years of experience and a steady hand, while Mr Trump has promised change that can be brought about only by a political outsider.
After what has been a controversial, unpredictable and often nasty campaign, the choice lies with Americans.
Mr Will Codrington, 33, said he is not particularly excited about this election which he describes as "disgusting and prolonged". But he feels voting is important, especially as a black man, because of the work that came before him which gave him the ability to vote.
Going into today (Tuesday), Mrs Clinton had a 3.4 percentage point lead over Mr Trump according to a polling average by political website RealClearPolitics.
While Mr Trump faces an uphill battle to get the 270 electoral college votes needed to clinch the election - the New York Times predicts he has only a 16 per cent chance of winning - it is not impossible.
Mr Trump after all had defied the odds in the primary race where he beat 16 other Republican candidates to become the party's nominee. Aware of the odds, Mr Trump told supporters yesterday (Monday) that he would pull a "Brexit plus plus plus".
New Jersey voter Karen Arakelian, 62, who owns a furniture business said she is certain Mr Trump is the right person to lead the country. She was supporting Mr Trump outside Trump Tower on Monday.
"He's not owned by anybody. He also doesn't need this job, the only reason he is doing it is because he sees the country is in trouble," said Ms Arakelian, who was holding a sign which read "drain the swap" - a phrase Mr Trump has used to refer to cleaning up government corruption.
But others like Mr Kyle Haver, 59, an educator, who was chanting "no Trump, stop Trump" at the same location, said: "Trump is dangerous to global society, does not understand civics or democracy and only serves himself."
The last polls will remain open till 11am on Wednesday morning (Singapore time), and winners in the past three elections have been declared between noon and 12.30pm.