
By Richard Wood
Voters in Scotland are going to the polls on Thursday 7 May 2026 to elect 129 MSPs.
Here’s how the Scotland’s Additional Member System works.
First Past the Post seats
Scotland is divided into 73 constituencies elected via First Past the Post. In this system, you get one vote for candidates in your constituency. The candidate with the most votes in each constituency wins the seat to become the constituency MSP.
On these seats alone, the share of votes cast for each party across Scotland are unlikely to match up with the proportion of seats won. To address this disproportionality, that’s where the other 56 seats come into play.
READ MORE: What electoral reform promises did Scotland’s parties make in their 2021 manifestos?
Regional party list seats
The country is also divided into eight regions each electing eight MSPs.
With this, you also get another ballot where you vote for a party of your choice. This party list element adds an element of proportionality to the Scottish Parliament so seats broadly match votes (although it’s worth highlighting that the system has proportionality problems that risk being on full display this May).
The allocation of party list seats is determined by list votes cast per party while also taking into account of constituency seats won by each party so seats roughly match votes over all.
If a party does wins lots of constituency seats in a region, they are unlikely to pick up many list seats. This has been the case for the SNP and Scottish Lib Dems in recent years. Similarly, if a party does well on the list ballot but not in constituencies, such as the Scottish Greens, then they will pick up list seats.
READ MORE: Scotland’s voting system is broken – another poll suggests seats won’t match votes this May










