Editing Highest averages method (section)

=== Zero-seat apportionments ===
Huntington-Hill, Dean, and Adams' method all have a value of 0 for the first fencepost, giving an average of ∞. Thus, without a threshold, all parties that have received at least one vote will also receive at least one seat.<ref name="Pukelsheim-2017-1" /> This property can be desirable (as when apportioning seats to [[Federated state|states]]) or undesirable (as when apportioning seats to party lists in an election), in which case the first divisor may be adjusted to create a natural threshold.<ref name="Pukelsheim-2017-9" />