In Korean society, regionalism has deep historical roots and has had a great influence on elections. A historic event occurred in 2014 when a conservative party candidate, Lee Jung-hyun, was elected as a member of the National Assembly in Suncheon-si, Jeollanam-do, where liberal parties have been in the midst of powerful political influence. This was possible because voters respondedto the candidate’s appeal to vote based on benefits to the local economy, that is, securing greater funding from the central government. Exploiting the synthetic control method, this article identifies how this different choice has affected the budget of the local district. The results show that the community budget has increased dramatically, and a battery of robustness checks also support these basic results. On the basis of the empirical evidence, the study suggests the possibility of overcoming a long-standing parochial regionalism in Korean politics through economic voting and its practical benefits.