Hillary Clinton and Donald Trump are set to clash in Las Vegas in the final US presidential debate before voting.
The two candidates will go head to head at the University of Nevada, and anticipation is high after Trump threatened to jail Clinton if he was elected in the second debate.
Chris Wallace, a Fox News host, is moderating the third election clash, set to cover six topics - debt and entitlements, immigration, economy, the Supreme Court, foreign hotspots and fitness to be president.
Multiple polls suggest Clinton is leading the race to the White House, so this is one of Trump's last chances to win over undecided voters.
However, the Republican candidate is going into the debate on the heels of multiple claims of sexual misconduct from a number of women. The claims surfaced after the publication of a 2005 video recording in which he described groping women in graphic detail.
Trump dismissed the footage as "locker room talk" in the second debate and vehemently denied the sexism allegations made against him by former contestants on his reality TV show The Apprentice. His wife Melania has also joined the counter-attack, accusing his political rivals of using the allegations to "damage the presidency of my husband."
Clinton has also faced criticism in recent days her use of a private email server, while Trump has declared the election will be rigged in favour of his rival, tweeting "there is large-scale voter fraud happening on and before election day".
President Barack Obama has urge Trump to "stop whining", while a number of prominent Republicans have rejected claims of election-rigging in response to these claims.