Indeed they are, and they have truckloads of ammo ready for when they need it.
They have ammo for every GOP candidate, not just Trump. Have you seen the Rafael Cruz "Ted is a king, annointed to rule over society" video yet? Or looked into Ted's links to Glenn Beck and David Barton and those profiting from illegal alien resettlement? And that's just Cruz. They have 20 phone books on Jeb.
But we also have ammo on Hillary. the only question is, will our nominee do what is necessary to make naked, blunt appeals to the only vote that matters in 2016: the WHITE VOTE? And can a GOP nominee from the establishment -- and yes that includes Cruz -- possibly win that vote? I don't think so. The Cruz plan was to be moderate on immigration and conservative on everything else. that all changed when Trump came in. But if Cruz prevails, there is no doubt he will go back to pursuing the 40% of Latino vote he got in Texas, by re-moderating on immigration. If he does that, Hillary will win a dramatic victory.