The document summarizes different electoral systems used in the UK and Scotland. It begins by explaining what an electoral system is and then describes the First Past the Post (FPTP) system used in UK general elections. It notes FPTP can result in disproportionate outcomes. The document then explains the Additional Member System (AMS) used in Scottish Parliament elections, which is a hybrid of FPTP and proportional representation. AMS aims to make representation more proportional. It provides an example of how AMS worked in a 2011 Scottish election. The document argues AMS increases fairness compared to FPTP.