No, they don't, cause he's full of ...it.
Wanna get a laugh? What he provided as "proof" in post #103 -- (notice he didn't link it?) was of an article ....from
2006. !! lol [
]State of the News Media Talk Radio ]
And even then, it was
all talk radio across the spectrum (mid Bush years, Air America was in full swing...) - (Vance is notoriously duplicitous)
Air America did fail, and while there are some liberal talkshow hosts, as you note, they are overwhelming eclipsed by the literally 24/7 rotation of back to back RW talk radio across the dial, found on every radio in the country.
it went to my point -- which still holds true, generally:
Liberals don't need or want to be told what to think, that's why left wing talk radio tends to fail.
Conservatives, however need, crave to be told what to think, and need to have it reinforced daily -- for some, hourly.