Johnson/Weld are at 11-13% in CNN, NBC, and CBS polling.
At 15%, they get to the debate stage, and that's also going to be the breaking point for the media to start covering them.
I'm not sure they can do it but their ideas are more grown up than Trump's and their characters less questionable than Clinton's.
If there's going to be a Libertarian president, this is a better chance than others.