I don’t know enough about Castle or O’Donnell to have a direct opinion on either. However I would note Delaware overall is not a particularly conservative state. Just because somebody is endorsed by some Tea Party organization doesn’t mean they are electable.
I doubt the lesson of the win in Alaska is applicable in suburban yuppie/old money Delaware. The risk is whether instead the lesson of Nevada is applicable, where unpopular Harry Reid’s best chance of survival is his Tea party endorsed opponent. Maybe the people in Delaware are better positioned to decide that without name calling by us.
Btw, this business of calling everybody a RINO has really been run into the ground. Besides since in fact you are calling for a Third Party, doesn’t this make you the actual Republican in Name Only ?
But your point is well taken and such people should be warned that the campaign to rid the party of RINOs (where we can) includes eliminating their running dog lackeys!