"Common sense" is anyone who agrees with "me", no matter the topic. "Me" being whomever is speaking.
A "moderate" is alternatively either an insult, if it's someone who used to agree with me on the particular topic or usually agrees with me but doesn't on this topic, or, it is a "compliment" if it refers to someone who can be manipulated or bribed to agree with me.
Everyone else is a fringe, lunatic.
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.