This paper explores the motives of legislators in seeking distributive benefits for their districts. Based on the perspective of distributive theory, the authors seek to determine whether the legislators of the Taiwan’s 6th Legislative Yuan are about to change their bill-initiation behavior, compared with the legislators of the 5th Legislative Yuan, due to the upcoming changes in the electoral system (i.e. to reduce members by 50% and replace the SNTV by a single-member-district). The negative binomial model is used to explore the factors that would affect the bill-initiation behavior of legislators favoring distributive benefits for their districts. The analyses of the negative binomial model reveal a significant effect of district size on the initiation of distributive bills in the 5th Legislative Yuan. The larger the district size is, the fewer the incentives that the legislators have, to pursue distributive policy interests. However, the statistical results do not exhibit a significant effect of district size on the initiation of distributive bills in the 6th Legislative Yuan in the sense that the discrepancies in terms of bill initiation among legislators from districts of different sizes are reduced. To be specific speaking, compared with the 5th Legislative Yuan, legislators who are from large districts in the 6th Legislative Yuan tend to initiate more distributive bills. The same pattern is also found among the 6th Legislators Yuan’s legislators who were elected from medium-sized of districts. However, this is not true for the legislators of small districts. These findings imply that the impact of the upcoming changes in the electoral system is more likely to be felt by the legislators who are from larger districts as opposed to those from smaller ones. In sum, this paper finds a significant effect of district size on the legislators’ distributive bill initiation behavior. It also finds that the impact of the coming changes in the electoral system on legislative behavior is already at work before it goes into effect. These findings have implications for distributive politics in Taiwan.