So the CPD allowed Ross Perot to participate in the debates in 1992 after he polled at only 7%. By the 1996 elections, the Republicans and Democrats in charge of the debates had changed the rules to require any third-party candidate to receive MORE THAN DOUBLE the poll numbers that Perot had received in 1992 to be able to participate. Surprise! Since 1992, NO third-party candidate has met that criterion. Rigged? You make the call.