Published online by Cambridge University Press: 24 March 2016
During the five democratic elections held in Taiwan from 1992 to 2004 inclusive, the formerly dominant Kuomintang Party (KMT) was temporarily supplanted by the Democratic Progressive Party (DPP) as the nation's largest political party. Most explanations for this have focused on party fragmentation and the changing patterns of electoral competition it helped create. These are important factors, but they have not been tested empirically at the level where candidates won and lost legislative seats, the level of the election district. This article offers such an empirical test, and it will show that these two factors had a direct impact on the ability of DPP and KMT candidates to obtain legislative seats. We also show that these factors carried indirect impacts by hurting the ability of the KMT and DPP to nominate in a way that they would obtain all the seats that their obtained vote shares would allow.