A copy of the secret debate contract the campaigns for Barack Obama and Mitt Romney drew up for the 2012 presidential debates has leaked. TIME has posted it. The contract includes express limitations related to other candidates qualifying for debates, not publicly calling or participating in additional debates, not mentioning people in the audience beyond family members or not addressing questions to each or asking candidates to take pledges.
It is what should be expected from a two candidates from the two most prominent political parties in America, which wrested control of the debates from the League of Women Voters back in the 1980s. The two parties launched the Commission on Presidential Debates (CPD), which has conducted itself like the corrupt organization it was destined to become by working to exclude third party candidates, debate moderators and key issues/topics for decades now.