Why do you think they are resorting to third party
Lindsey Graham and Rick Perry are campaigning for Ted as we speak
These are the same people who accused conservatives or libertarians who voted third party in the past of being traitors who are "helping the Democrats," or fools who are "wasting their vote." Now that they're faced with a nominee who the grassroots support rather than an nominee that they've approved, they throw a tantrum and say that they want a third party of their own. Very typical.