Which term is used for a proposed change to existing legislation that appears on a ballot?

The term used for a proposed change to existing legislation that appears on a ballot is an initiative. Initiatives allow citizens to propose legislation or constitutional amendments and vote directly on them. This process often involves gathering a certain number of signatures from registered voters to qualify the initiative for a ballot, thereby giving the public an opportunity to influence legislation directly.

In contrast, a bill typically refers to a formal proposal for new legislation or an amendment to existing laws that is presented in a legislative body for debate and approval. A proposal is a broader term that can apply to various suggestions for changes and does not specifically pertain to ballot measures. An amendment generally refers to a formal change or addition to a legal document, such as a constitution or law, but it is typically associated with changes that are suggested during legislative deliberation processes rather than through direct voter ballot initiatives.