Donald Trump and Hillary Clinton will face off in the 1st presidential debate tonight at Hofstra University in New York.
It is estimated that 100 million people will tune in, making tonight's debate the most anticipated in modern political history.
Trump, 70, is expected to come out the winner as the debate rules are clearly against the ailing Clinton, 69.
The rules state that each candidate must stand for 90 minutes while fielding prepared questions from a moderator, in this case MSNBC's Lester Holt.
There will be no cough breaks for Clinton, meaning she can't disappear into the ladies room and not return to the podium like she did during a debate against Bernie Sanders.
There also won't be a chair for either candidate to sit on. If a candidate can't stand up for 90 minutes they have no business running for president.
But for the most part tonight's debate rules are top secret.
For instance, we don't know if Clinton will be allowed to wear a microphone earpiece so her handlers can whisper the answers to her like she did during the town hall last month.
Trump has already complained that the debates are a "rigged system."
"I certainly don't think you want Candy Crowley again," Trump said, referring to the infamous incident during the 2012 debates when former CNN political analyst Candy Crowley appeared to assist Barack Obama with an answer.
The ensuing backlash from the public led to Crowley retiring from journalism.
We were not sad to see her leave.