延續與差異：以當選立法會議員的組別背景和區域性得票為視角

From the perspective of group affiliation of elected legislative assembly members (2013, 2017 and 2021), this paper adopts numbers of valid votes in various areas in order to calculate the Standardized Incidence Ratio (SIR) for individual elected groups. It aims to investigate the difference of competiveness in gaining votes by groups with distinct affiliations in regional perspective, so as to manifest the possible relationship between the socio-economic backgrounds of voters and electoral group affiliation. In addition, the paper also discusses the duration and trend of the competiveness in gaining votes. It is found that in the circumstance that the political platforms of competing groups are still in much similarity. Though there is huge regional divergence among groups in gaining votes, it cannot be confirmed that group affiliation casts a very strong effect on voting behavior. Nevertheless, from the observation throughout the years, the competitiveness of groups in gaining votes among different districts has remained in much stability.