There are very few liberal talk radio hosts because of their poor ratings. The poor ratings come from the fact that there are very few liberal talk radio listeners.
Why is this? Very simple, most people who listen to talk radio do this in their car during the commute. What distinguishes these people from others?
They all have a job and they all pay taxes. Otherwise they would not be commuting.
These people are the backbone of America. We are the ones who actually go out and work for a living, producing something of value for the rest of the country.
Its safe to say that most folks really don't want to hear a far left-wing Calfornia talking liberal on the radio. And thats the problem. If democrats understood this and simply found some 'John-boy' type from Virginia, who was middle of the road democrat...who had a simple environmental talk...who was pro-union but also understood the relationship of the economy to good business...who was supportive of families and communities...who didn't constantly push for pro-homosexual stances...who could talk sports or current events on occassion...and actually was intelligent...then they could take on Rush and the current crowd. But they haven't found this kinda person. The person exists...and there are probably 100s like him out there...but the left simply doesn't want that type of Democrat to be the speaker of the party...too centralist...too family-oriented...weak environmental double-talk...etc. So...for the time being...Rush is it. And you can't play in the major leagues unless you have the firepower to do it.