This makes no sense.
On election day there will be an option of neither (no vote) or other (one of the 3rd party candidates).
So why eliminate that from polls?
Because Gary Johnson takes more from Hillary than from The Donald. That’s why they eliminate 3rd party
There was another option for Not Voting. Neither was essentially the same as Other in a Clinton/Trump matchup. Eliminating the terminology is less important to getting a true picture of the race than adding the names of the other candidates.