Did Johnson cost Hillary the election?

[elcorazon]

It's ironic that her husband Bill won because of Ross Perot.

No. Johnson did not cost Hillary the election and Perot did not cost Bush the election.

[elcorazon]

If Johnson had run a decent campaign, he could have possibly gained more votes which eventually went to Trump.

there could be something to this. I do wonder if Johnson seemed like a thoughtful candidate, perhaps he could have had a Perot like vote total that might have taken away from Trump more than Clinton. On the other hand, Republicans were likely always coming home.
Hillary had a really hard time convincing people that she could be both President and a woman at the same time.