We study the relationship between parties’ candidate selection processes andlegislative productivity. Utilizing the legislation data of the 17th NationalAssembly for which some of candidates were selected by the bottom-up selectionprocess, we try to shed some light on how candidate selection methods affectwhat bills to propose, other party member’s countersignature, and the possibilitythat a bill passes on the floor. Anchored on our empirical analysis, we arguethat it is desirable to adopt bottom-up candidate selection in all the levels ofelections, and hold National Assembly election and local elections in the sameyear to enhance the legislative productivity.