Show aliased fields for one voter if using alias 

Aliased fields are shown for voter listing ({HELIOS_HOST}/elections/<ELECTION_ID>/voters/), but not just for one voter ({HELIOS_HOST}/elections/<ELECTION_ID>/voters/<VOTER_ID>), when using alias.
confused by this "or" statement, couldn't this just be

    fields = self.FIELDS

since the for statement also includes alternate_fields in there?

Just want to make sure code is as simple as possible :)