How the Scottish Parliament Voting System Works

There is a lot of confusion about how the voting system works and MSPs are allocated in the Scottish Parliament, particularly because of the regional list. The purpose of this article is not to tell you who to vote for, but just to explain how the Additional Member System works in allocating seats to MSPs in the Scottish Parliament. Another issue this will clear up that is thrown about that says to maximize the number of Independence supporting MSPs, you have to vote SNP twice. When you understand how the Additional Member System works and allocates MSPs you will see that this is not the case at all.


In the Scottish Parliament there are 129 MSPs. 73 MSPs represent constituencies elected by First Past the Post. The other 56 MSPs are elected from regional lists. Each geographical region combines between 8 and 10 consistencies and elected 7 MSPs using a method of proportional representation. The Additional Member System combines two voting systems in Scottish Parliament elections. This is not a first and second preferences vote like local council elections, it is 2 votes.

The 73 constituency MSPs elections are pretty straight forward, exactly like UK General Elections it is done using the First Past the Post method. First Past the Post means the person with the most votes wins the seat regardless of what percentage or how many votes they received. Second or third place gets you nothing here.

The other 56 MSPs are where it gets a little complicated. Here is uses the D’Hondt method of proportional representation to allocate seats, this is designed to make the seats allocated match more closely to the percentage of votes received. This is exactly the same system we use to elect our MEPs to the European Parliament. However there is a twist in the way it is done in the Scottish elections. To explain how this works, it is best to use an example so I will use the Scottish region from the 2014 European elections to show how the D’Hondt system works and then use a region from the last Scottish election to show the twist.

Key features to having a List is that unlike constituencies, you are not voting for a person unless they are running as an Independent, you are voting for a party. The parties have selected an order for their candidates, and the seats will be allocated in this order. First the party with the most total votes is allocated a seat, in this case, it was the SNP with 389,503. Then their total votes are divided by the number of seats they have +1, so 2 in this case, leaving them with 194,751.5 (the number in brackets). The highest number of votes is now Labour with 348,219, so they are given 1 seat and their vote is divided by 2, leaving them with 174,109.5. Hopefully you can start to see how it works now. Each time a party is given a seat, their vote is divided by the number of seats they already have +1. This makes it increasingly difficult to win more and more seats and gives parties with less votes more of a chance of getting some representatives. In this case SNP won 2 seats, Labour also won 2, the Conservatives won 1 seat and UKIP won the last seat.

I would recommend you watch this short video of Jeremy Vine explaining how the D’Hondt method works and uses an example from the European elections with some nice visuals.

Hopefully you now have a good understanding of the D’Hondt system. Now back to Scotland, let’s take a look at the North East Scotland region from 2011 to show how the twist works.


The SNP won more the 3 times the votes Labour did but only got 1 seat. The Tories even got 2 seats but only had 14.1% compared to SNPs 52.7%. What’s going on here? Well here is the kicker, before seats are allocated on the regional list, your vote is divided by how many seats you already have, from the constituencies in the region +1. There are 10 constituencies in this region, SNP won all 10. This means that their 140,749 votes were divided by 10+1, so 11, before any seats were even allocated. This is the Additional Member System at work, this is the system designed to punish you on the regional list if you do well in constituencies. So every list vote given in this region for the SNP is an 11th of a vote. While every other party in this case did not win any constituencies and therefore, a vote for them was worth more.


This is how it works and this is why votes for the SNP on the list in 2016 will not maximize the independence vote if that is your intent, but will weaken it, especially as polls currently have them winning almost every single constituency in the country.   

By Bryan Quinn