Who will come up the big winner tonight?
Democrat Hillary Clinton and Republican Donald Trump will face off for the first time on Monday in a presidential debate that could rank as one of the most watched and highly anticipated political showdowns in U.S. history.
The surprisingly tight race for the White House and the unpredictable clash in styles between well-known but polarizing forces has generated wide interest in the potentially pivotal encounter, which comes six weeks before the Nov. 8 election.
The size of the audience is expected to challenge the presidential debate record of 80 million who watched the 1980 encounter between Democratic President Jimmy Carter and Republican Ronald Reagan.
The 90-minute debate will begin at 01:00 GMT on Tuesday at Hofstra University on New York's Long Island. It is the first of three planned presidential debates.
Both Trump and Clinton, who polls show are the least liked White House candidates in modern history, hope to use the debate to erase some of those lingering voter doubts and address campaign-trail weaknesses.
The volatile Trump, a businessman and former reality television star, will get a chance to show a depth and steadiness worthy of a credible commander in chief, while the cautious Clinton will be able to try to connect directly with voters who do not trust her, strategists said.
But Trump, a political newcomer who has often shown more affinity for putdowns than policy, could benefit from lower expectations from voters.
The stakes are enormous. The debate comes as polls show Clinton's once sizable lead over Trump has evaporated amid more questions about her family foundation and her use of a private email server while secretary of state.
A Reuters poll released on Monday showed half of America's likely voters would rely on the debates to help them make their choice. More than half, 61 percent, were hoping for a civil debate and were not interested in the bitterness shown on the campaign trail.
Clinton, 68, and Trump, 70, have regularly exchanged sharp insults, raising the prospect of a fiery grudge match. Trump frequently chides Clinton as "Crooked Hillary" and has called for her jailing for the email controversy. Clinton condemns Trump as temperamentally unfit for the White House.
Trump dominated the crowded Republican debates with rapid-fire attacks on his rivals, but he has no experience in a one-on-one debate setting that requires more prolonged discussion of issues.
One thing is for sure, tomorrows polls will be much more accurate.