First Past the Post (FPP) is a simple solid system. The electorate cross one candidate and the one with the most votes wins. Each elect also represents a much smaller constituency compared to PR. The weakness of this system is safe seats and gerrymandering.
A candidate can win with the largest minority of votes, which normally creates a two party system, one socialist and the other conservative. A four party system would be better as you can vote for one side of the political spectrum and how moderate or radical you want it to be.
Which leads to lack of voter choice because you could either waste your vote on a smaller party or one of the main ones you dont fully agree with. This all increases the chances of safe seats where one party can more easily win their constituency.
Gerrymandering is where the constituency is formed in such an unnatural way that it does not correspond to the local voters fixed community. This is done because the controlling party or directly elected leader, will change the boundaries so that the oppositions electorate are the minority in more constituencies.
This can be avoided with an independent boundary commission which will look at the voter populations and current boundaries. A percentage discrepancy can be introduced between the smallest and largest constituency.
You can have multiple past the post by combining two or more constituencies together. The winning threshold is total votes divided by seats, if there are any remaining seats available then they are won with spare votes. The problem is you lose the individual constituency link.
The party list can be closed, where the party decides the priority of candidates. An Open list is where the electorate preference those candidates. Semi open is where the party decides beforehand if you just want to vote for the party, but you can still preference if you want to.
The alternative Vote (AV) is where the electorate preference their candidate choices, with the least supported being eliminated. This gives voters more of a choice when selecting candidates and the winner must achieve an actual majority.
Some people may feel its unfair for some votes to be counted more often than others, especially if you can max preference with a broad set of candidates. For closed elections you could limit candidates to four and have max preferences. For open elections you could minimalize preferences to two but with greater candidate selection.
The D Hondt Method (DHM) is a formula that divides the party vote share every time they win a candidate. The calculation is original party votes / (seats won +1 = ) = remaining votes.
Party/Round
One
Two
Three
Party A
100,000
1*
50,000
1
50,000
1
Party B
80,000
0
80,000
1*
40,000
1
Party C
60,000
0
60,000
0
60,000
1*
Party D
40,000
0
40,000
0
40,000
0
Four
Five
Six
Seven
50,000
2*
33,333
2
33,333
3*
25,000
3
40,000
1
40,000
2*
20,000
2
20,000
2
30,000
1
30,000
1
30,000
1
30,000
2*
40,000
0
40,000
1*
20,000
1
20,000
1
When Party A wins their 2* seat in round four you calculate the remaining votes by their original vote. So 100,000 votes / (seats won 2 + 1 =3) = 33,333.
Sometimes smaller parties form coalitions to combine their votes and potentially win more seats. Their combined vote share is split by their partys vote shares to win seats. If they win four seats and each partys percentage share was A/50pc, B/30pc and C/20pc, then seat allocation would be A2, B1 and C1.
Sometimes a party needs to reach a percentage threshold like 5pc or enough to win a seat. Otherwise they are eliminated and this helps weed out smaller extreme parties.
A coalition may need to reach a higher threshold like 7pc or each additional party adds 5pc with a cap of 15pc, even if four or more parties are added.
Mixed Members Proportional (MMP) is where the FPP and DHM elects are equal in number. If DHM elects are less in number than FPP its called Additional Members. If the first voting method doesnt affect the second, its called Parallel Voting. Voters have two ballot papers for each type, with party votes being separate from each election. AV could be used in both stages, unless winning a seat.
Before the first round of DHM elections, the FPP seats already won divide the partys DHM votes first. If Party A won two FPP seats and their DHM vote is 100,000. Then its 100,000 / (seats won 2 +1 =3) =33,333. So 33,333 is their new starting point in round one in DHM. The downside is FPP elects will have to represent a constituency twice the size, or you double the amount of total elects.
Parties can do something sneaky and create decoy lists using satellite parties, which are working for the main party. Their voters will support their satellite party in the second round, meaning the main parties votes are not split in DHM elections from first round gains. To solve this voters only get one vote, meaning their single vote is used twice for local elections and for the larger constituency. Votes used to win seats locally are not counted unless they are surplus.
Single Transferable Vote (STV) is where the electorate can preference candidates across party lines. Your first preference might be candidate One of Party A, while your second preference is candidate Two of Party B.
Additional votes above the winning threshold are passed on, to the voters next preference as a percentage.
There are two methods to calculate the winning threshold, the Hare and Droop quotas. The Hare is votes / seats = threshold. The Droop is votes / seats plus one, plus one vote = threshold.
STV maximises voter contributions in winning candidates, by minimising wasted votes on losing choices. There are strong draw backs to this system.
If a party fields too many candidates they could all be lost in the first round, even if the party has enough overall votes to win seats. If the electorate spread their first preferences on multiple candidates within the same party, but their second preferences are for other party and their candidates.
First Preferences
Party A
Party B
Party C
Candidate 1
12.7pc
14pc
13pc
Candidate 2
12.6pc
11pc
12pc
Candidate 3
12.4pc
No Candidate
No Candidate
Candidate 4
12.3pc
No Candidate
No Candidate
Second Preferences
Party A
Party B
Party C
Candidate 1
12.7pc
14pc
13pc
Candidate 2
12.6pc
Eliminated
23pc
Candidate 3
12.4pc
No Candidate
No Candidate
Candidate 4
12.3pc
No Candidate
No Candidate
Now what if in the third round onwards those party A votes are transferred to the other two parties? As you can see Party A should have gained two seats by vote share, instead of the eventual one seat gain. This is also why constituencies are normally ranged between 3-5 seats and the droop quota is used, as the lower threshold favours larger parties. This could be resolved if you first vote for the party and preference their candidate choices, with only surplus party votes going to another parties.
The other major drawback is you require computers to work out the complicated percentage formula, of additional votes to other candidates.
Proportional Past the Post (PPP) will have one large constituency (LC), which will house their small constituencies (SC) for individual elects. The electorate will vote in their local SC and their results will be sent to their LC.
Multiple past the post with the Hare quota would be used, with spare votes winning remaining seats. This would be simpler to implement and favour smaller parties, but a ten-seat limit would be applied.
Parties would rank their candidates from highest to lowest by total votes and qualify their highest candidates first. A combined cross-party list of qualified candidates is then created, with the highest candidate starting their constituency first.
If two or more parties have candidates that are ranked qualified in the same SC, then the candidate with the highest vote share wins. The losing qualified candidates are eliminated and their qualification is passed on.
If for some reason no qualified candidate is available, then the highest local vote share elects, which might be from a losing party with no winning qualifications.
A four-party system is needed because core support for socialism and conservatism is divided between moderate and radical members. These two factions need their own parties, as having a civil war while in government or opposition costs the electorate.
To help solve this these two parties can form a coalition, meaning their votes are transferred if not winning in the first or second rounds. If a coalition government is formed the senior and junior partners are already established helping joint policy. Having more than two parties would be less stable as there would be too many conflicting interests.
There will be six levels of constituency, ward, council, province, region, state, and union. The higher-level territory will distribute seats to their level below using PPP, with voter population divided by seats.
Small constituencies within the same large constituency can't be 50pc more voter populated, compared to their smallest constituency. They should try to stay within the same boundaries as local government, even if that means having multiple constituencies within. Small local authorities can combine with another and only as a last result should portions of one authority be separated.