YouGov is also complete trash. They don't even include third parties, you have to write them in.
To be fair, the only 3rd party candidate on the ballot in all 50 states is Johnson. Not including them is not unreasonable given the ability to, you know, actually vote for them.
https://www.lp.org/2016-presidential-ballot-access-map
Ohio, Pennsylvania, Virginia and Iowa being the most important of these as battlegrounds
