Just spoke with conservative Rep. Dana Rohrabacher of California, whose statements indicate that Blunt’s support might be softer than his numbers suggest:

As the candidates stand right now, I’ve endorsed Blunt, but I’ve left myself open should that list expand. I’m not referring to anybody specific, but if another candidate gets in that’s more conservative than Roy but has the same positive way of handling himself that Roy does, then I would be open to considering such a candidate. Roy is acceptably conservative to me, but if there’s a stronger conservative that has the same personal qualities and the same public persona, then I would consider supporting that person.