The replacement talk show host who takes over for you when you are unavailable SUCKS! There is just no other way to say it. The guy has all the charisma of a dead fish. He isn't engaging, conservative, he rambles and he's B O R I N G as blazes.
Your show is unlistenable, every time this guy takes your place; case in point: the entire week you were gone recently (by the way, continue to get well soon), and every time I hear his voice at the beginning of the broadcast, like today, I IMMEDIATELY turn WRKO off on Iheart Radio, or AM 680 and turn on RUSH instead.
I know this present situation is probably beyond your control, but you said your contract is about to be renegotiated. You need to get rid of this guy ASAP and replace him with someone you respect, who is on the same conservative page you faithfully adhere to, and who is engaging... everything the present replacement isn't.