In the past, survey data analysis was used to explain how people decide their voting choices in local elections, together with qualitative methods including interviews, observations, and historical accounts. One of the main themes in the three-in-one local elections in 2005 was the extent to which voting choices in the three elections were correlated. This paper combines survey data and field interviews of local factions in order to explore voting behavior in Loh Tsui County. According to the TEDS 2005M data, we find that voters’ decisions regarding the magistrate were only influenced by their views on the councilors and their party identification. Field interviews, however, indicate that the candidates for magistrate, councilor and mayor did not cooperate in this election, which partly confirmed the findings based on the quantitative research. Loh-Tsui County was chosen because there is ample qualitative data of a high level of party competition. This paper suggests that the quantitative and qualitative studies may be mutually supportive of each other and blaze a new trail in local politics.