You underestimate the Ameirican people and the amount of TV they watch, they know the candidates, its all they talk about on the tube these days, I think your argument is probably coming from a positon of backing a candidate with no traction and hoping for some sort of change in the months before the election.
You underestimate the people who disagree with you. This is what I do for a living. I have been following and working with polls for nearly 20 years. I have helped draft polls and I have seen polls and focus groups that you have not seen nor will ever see.
I am not backing any candidate at this time though I do have some favorites.
As for the depth of interest by the public at this point, you are clearly living in an echo chamber. Go to your local mall and stop total strangers and ask them DETAILS about the presidential candidates and their policies. If you do that, you will come back agreeing with me.