Hillary Clinton and Donald Trump are preparing today for the second Presidential debate, set for Sunday in St. Louis.

FOX's Jon Decker has more from the White House:

Hillary Clinton and Donald Trump are doing more debate prep today with their top campaign advisers ahead of Sunday night's debate at Washington University in St. Louis.

N.J. Governor Chris Christie and RNC Chairman Reince Priebus are helping Trump prepare.

The debate will be a town hall meeting format where half of the questions will be posed directly by the town hall participants and the other half will be posed by the moderators, ABC's Martha Raddatz and CNN's Anderson Cooper.

The candidates will have two minutes to respond and there will be an additional minute for the moderator to facilitate further discussion.

At the White House, Jon Decker, FOX News.