That is irrelevant to your claim that "if those three "incumbant" persons [...] are democrats, they certainly would give private support to Mr. Cox" and your apparent implication that if if those three incumbent persons were Republicans it is less than certain that they would give private support to Mr. Cox.
Maybe you should just say plainly what point you were trying to make.
The onus is not on me. The onus is on the LP.
I can't help it if they decide to not to disclose what the political affiliation of the three incumbants are.
JMO, using common sense, the three "incumbants" are demos, since the LP press release which this thread is based on is anti-Republican.