In this PDF, there is everything you need to know about electoral systems to get an A* in A Level Politics! Including First Past The Post (FPTP), Additional Member System (AMS), Single Transferable Vote (STV) and Supplementary Vote (SV). I go through how each of them are used, the advantages and disadvantages of all of them, as well as a comparison of FPTP, AMS and STV on 4 key criteria.