Why are minority parties being excluded from Presidential debates.
If they are standing nationwide, or covering a sufficient number of states then this should be permissible.
Discuss
There's nothing to discuss.
Under the current system, such candidates are not excluded - unless their chances are vanishingly small, which they always are. (The rule is that to be included, a candidate needs to poll above 15% in at least five opinion polls).
When they have less than 15% support, what they have to say is just irrelevant noise. The voters have enough bullshit to dig through as it is, without adding a third or fourth political bullshitter to the mix.
It's a two party system. I don't think it
should be; But it is, and it's not going to stop being just because the Libertarian or Green candidate gets fifteen minutes of fame during the debates. Including such candidates would be a useful exercise only after the necessary constitutional amendment(s) to establish a system that gives minor parties a realistic chance. Until then, including them is a waste of everyone's time - including that of the candidates themselves.