JUST ANNOUNCED: Bill O'Reilly will be doing live post-debate coverage for BillOReilly.com Premium Members immediately following the first presidential debate one week from today.

'This is the most important night of the election,' O'Reilly says. 'And many people, including myself, are not convinced that Joe Biden has the mental acuity to run the country... the pressure is on.'

Sign up for special access to the post-debate coverage and get a free copy of O'Reilly's new bestseller 'Killing Crazy Horse' with your membership.

'This debate is going to be chaos, with both candidates trying to destroy each other - and I will have the best analysis you will find anywhere.'

Get a FREE copy of O'Reilly's new bestseller 'Killing Crazy Horse' when you sign up to watch.

Mark your calendar for Tuesday, September 29 at 10:30pm ET immediately following the debate for top notch analysis of this crucially important event.