Looks like it’s just the second-tier candidates for now:

WND Editor Joseph Farah has been chosen to moderate a Republican presidential debate here the night of Sept 17.
The “Values Voter Presidential Debate,” is being produced by ValuesVoter.org, a group which says on its website “Our American values are the values that existed before time and were articulated in America’s founding document on her birthday, the 4th of July, 1776.”
[…]
Looking forward to the event, Farah said, “So often in presidential debates, questions are asked and answers don’t address the questions. When that happens, I’m going to try to persuade the candidates to focus more precisely on what was asked.”
Questions will also come from 40 of America’s leaders including: Paul Weyrich, founder and president of the Free Congress Foundation; Phyllis Schlafly, founder and president of Eagle Forum; Don Wildmon, founder and chairman of the American Family Association; Judge Roy Moore, a WND columnist with the Foundation for Moral Law; Rick Scarborough of Vision America; and Mat Staver of Liberty Council.
[…]
Republicans who have confirmed participation already include Duncan Hunter, Mike Huckabee, Tom Tancredo, Sam Brownback, Ron Paul, John Cox and Alan Keyes. Organizers are still working on others, including Rudy Giuliani, Mitt Romney, John McCain and Fred Thompson.
The debate will be broadcast live on Sky Angel, and rebroadcast on the Inspiration (INSP) Network , the DayStar Television Network, God TV and TBN Nejat TV, which covers the entire Middle East and Europe. It will also be streamed live on pro-family websites including ValuesVoterDebate.com and AFA.net, and heard live on the VCY and AFA radio networks.

It would be refreshing if he is able to get the candidates to answer the question they are asked.