In the last election, the League of Women Voters, who sponsored the National Presidential debates, would not allow any third party candidates in the debates. They thought it would hurt Kerry. Now watch them allow the third party folks because they know that the vote needs to be split up -- only way the Dems can ever win again -- mark my word -- 34% of popular vote needed in a strong three way race.
The rationale was and will be that if three or more candidates are polling more than 5% in the polls, then three or more candidates will be engaging in debates.
No need for conspiracy theories.
All they have to do is pack the "town hall" meetings with NEA members like they did last time.