The Huntington–Hill method of apportionment assigns seats by finding a modified divisor "D" such that each constituency's priority quotient (its population divided by "D"), using the geometric mean of the lower and upper quota for the divisor, yields the correct number of seats that minimizes the percentage differences in the size of subconstituencies. When envisioned as a proportional electoral system, it is effectively a highest averages method of party-list proportional representation in which the divisors are given by formula_1, "n" being the number of seats a state or party is currently allocated in the apportionment process (the lower quota) and "n"+1 is the number of seats the state or party "would" have if it is assigned to the party list (the upper quota). Although no legislature uses this method of apportionment to assign seats to parties after an election, it was considered for House of Lords elections under the ill-fated House of Lords Reform Bill.