Washington - Republican presidential hopefuls Sen. John McCain and Rep. Ron Paul are the only two GOP candidates to have signed on so far to participate in the GOP edition of CNN and YouTube's presidential debate, the Washington Post reported.

All eight Democratic presidential hopefuls participated in that party's version of the CNN/YouTube debate on July 23.

Despite the fact that Rudy Giuliani, Mitt Romney and Rep. Tom Tancredo all have campaign-related videos on YouTube, none have committed to the Sept. 17 debate.

CNN's Sam Feist told the Post the network sent "save the date" notices to Republican candidates a month ago, and individual campaigns were contacted by phone last Friday.

Sources close to his campaign told the Post that Giuliani was unlikely to participate, while Romney told the Manchester Union Leader: "I think the presidency ought to be held at a higher level than having to answer questions from a snowman."

YouTube has so far received about 400 video questions for GOP candidates uploaded by users.

Related Links:
http://tinyurl.com/3xp7u5 (Washington Post)

http://www.youtube.com/debates