Just want to say that I understand where your coming from, but I don't know if a third party is the best solution.
If 14% of the country voted third party, yes there would be some changes. The Democrats would be completely unable to compete with the Republicans, and possibly all branches of our government would be conservative .... for at least a term ... who knows what the long term effects would be. The Dems might promise some stuff to try to persuade blacks to come back in the short term, but it'd eventually go back to the status quo. The fact of the matter is, no third party could hope to compete, and frankly, I don't want to imagine an America completely controlled by the Republican Party.