Editing Additional-member system (section)

==== Example ====
In a 100 seat assembly 70 members are elected in single-member constituencies. Because the system generally favours the largest party and those parties/candidate that are strong in a particular region, the total result of the constituency (FPP) elections can be very disproportional. In this example, the party with a [[Plurality (voting)|plurality]] in the popular vote (party A) won a majority of all seats (54), while the second largest party (B) only won 11 districts. One of the two smaller parties (party C) won no districts, despite having 13% support nationwide, but a smaller (regional) party with only 3% nationally did get 5 of their candidates elected, as their voters were concentrated in those constituencies.
{| class="wikitable"
! colspan="2" |Party
!Popular vote (%)
!Constituency seats
!Additional seats
!Total seats
!Constituency seats
|-
| style="background:#D10000" |
|Party A
|'''43%'''
|'''54'''
| ?
| ?
| rowspan="5" |[[File:AMS fptp seats.svg|frameless]]
|-
| style="background:#0008A5" |
|Party B
|'''41%'''
|'''11'''
| ?
| ?
|-
| style="background:#03AA00" |
|Party C
|'''13%'''
|'''0'''
| ?
| ?
|-
| style="background:#820084" |
|Party D
|'''3%'''
|'''5'''
| ?
| ?
|-
|
|TOTAL
|100%
|70
|30
|100
|}
In the example, additional seats are assigned on a nationwide level. Parties A and D are already overrepresented, so they are not entitled to additional seats. Parties B and C receive top-up seats, as there are only 30, this is not enough to make the results proportional. 
{| class="wikitable"
! colspan="2" |Party
!Popular vote (%)
!Constituency seats
!Additional seats
!Total seats
!Overhang seats
!Seats deficit
!Additional seats
!Total seats
|-
| style="background:#D10000" |
|Party A
|43%
|54
|'''0'''
|'''54'''
| +11
|
| rowspan="5" |[[File:AMS additional seats.svg|frameless]]
| rowspan="5" |[[File:AMS total seats.svg|frameless]]
|-
| style="background:#0008A5" |
|Party B
|41%
|11
|'''23'''
|'''34'''
|
|7
|-
| style="background:#03AA00" |
|Party C
|13%
|0
|'''7'''
|'''7'''
|
|6
|-
| style="background:#820084" |
|Party D
|3%
|5
|'''0'''
|'''5'''
| +2
|
|-
|
|TOTAL
|100%
|70
|30
|100
|13
|
|}