Some of us want to abandon both national parties and organize to take back the country via the States. After all, that is how the country was designed to function.
You can call this quest quixotic and foolish. But the difference between our plan and yours is that if our plan works, it actually accomplishes something. With yours even if you succeed you fail. The Bush years proved this beyond any doubt.
The states don't confirm Supreme Court Justices, the Senate does. The most profound and lasting moves to the left in this country have either come directly from the Supreme Court or where upheld by the Supreme Court when the court was most populated by leftist Justices.
This is the fact that is lost on the third party advocates. A third party will be all the impetus the Democrats need to make sweeping ideological changes to our form of government. In short, whatever grass roots support a conservative movement may gain at the state level, would be rendered moot by a permanent leftist Supreme Court majority.