STV SLV stands for "Single Transferable Vote" and "Single Non-Transferable Vote," which are electoral systems used for electing representatives. STV allows voters to rank candidates in order of preference, ensuring that votes can be transferred to other candidates if their preferred choice does not have enough support. This system promotes proportional representation and can lead to more diverse elected bodies. In contrast, SLV is a simpler voting method where voters select one candidate only, and there is no transfer of votes. This system is often used in single-winner elections, making it straightforward but less representative of the overall voter preference compared to STV.