According to Roll Call (sub. required), 8 Republicans join the trio in opposing the White House: Susan Collins, Olympia Snowe, Richard Lugar, Mike DeWine, Gordon Smith, John Sununu, Lincoln Chafee, and Chuck Hagel.
Sorry but until some credible corroboration comes out people should take this with a huge grain of salt. A statement by one of the RINOS would credible but not this unverified, anonymous claim in the Congress's propaganda rag.
This just smells like more disinformation and propaganda from the McCain camp trying to make their position look more credible.