The House of Representatives is a people's representative institution or legislative body. Members of the House of Representatives at the central and regional levels can be replaced by other members through a mechanism, namely Interim Replacement. The purpose of replacement over time is to maximize the performance of legislative members effectively and efficiently. However, there is a problem, namely the replacement of legislative members in the middle of his term of office. This study aims to analyze the inter-time replacement mechanism for members of the House of Representatives and how voters are involved in the inter-time replacement mechanism. This research is a normative juridical study using secondary data as the main data in the form of statutory regulations, research results, and journals. Based on the research results, the interim replacement mechanism does not involve the public, namely voters. Disputes between members of the legislature and the supporting party cannot be avoided due to an inaccurate process in implementing the mechanism. It is necessary to refine the mechanism for Inter time Replacement of members of the House of Representatives where it is not only the authority of political parties but also the public authority, namely constituent voters.Keywords: Public Authority, Interim Replacement, Representative