Vice President Joe Biden and Republican VP nominee Paul Ryan will meet for their first and only debate tonight.
The debate will take place at 9 p.m. EST at Centre College in Danville, Ky., with ABC News chief foreign correspondent Martha Raddatz as the moderator.
The focus is on both domestic and foreign policy.
The debate will be divided into nine segments of 10 minutes each. Raddatz will open a segment with a question and allow each candidate two minutes to respond. A discussion will then follow.
Ryan's debate partner has been attorney Ted Olson. U.S. Rep. Chris Van Hollen is Biden's partner.
The networks planning to broadcast the debates live include ABC, CBS, FOX and NBC, as well as a CNN, Fox News and MSNBC, C-SPAN and others. Web viewers also will find live-streaming coverage.
The first presidential debate took place on Oct. 3, with Jim Lehrer of "Newshour" moderating at the University of Denver.
There will be two more presidential debates.
The Oct. 16 presidential debate will be a town meeting focusing on foreign and domestic policy. The debate will take place at 9 p.m. EST at Hofstra University in Hempstead, N.Y., with CNN chief political correspondent Candy Crowley as the moderator.
On Oct. 22 at 9 p.m., the presidential candidates will debate foreign policy at Lynn University in Boca Raton, Fla. The moderator will be Bob Schieffer, Host of “Face the Nation” on CBS.
The debate will be divided into six segments of about 15 minutes each on topics to be selected by Schieffer. He’ll open each segment with a question, give each candidate two minutes to respond and then use the balance of the time for a discussion on the topic.
U.S. Sen. John Kerry has stood in for Romney in Obama's practice sessions, and U.S. Sen. Rob Portman is playing Obama for Romney.