a nice 30 minutes. It shows that he should be on stage with Trump and Clinton for national debate. #moredialoguebetterdialogue 

Is he close to getting on stage with them?

at 10%, yes, for the 15% barrier, not yet...

He doesn't have much time to make that 15% barrier. 

https://fivethirtyeight.com/features/down-ballot-democrats-should-go-after-johnson-and-stein-voters/

I read a recent poll reported 37% of Americans would seriously consider voting for a 3rd party at this point.

Which means they really should let Gary Johnson into the debates. .

I wonder who would fight that from happening: Trump, Hillary, or both?

both, I speculate. 

I'm guessing Hillary would want Gary Johnson in the debate to siphon reasonable people away from voting for Trump.