Polarization and Ideological Congruence between Parties and Supporters (with Royce Carroll) Public Choice (R & R).
 The Sources of Party Loyalty: Explaining Intra-party Perceptions of Party Organization and Leadership (with Royce Carroll) Party Politics (R & R).
-Explaining Party Ideological Cohesion: District Partisanship, Electoral Competition, and Ideological Deviation in Japan’s Mixed-Member Systems, 2003-13
-The Logic of Delegation and Institutional Contexts: Ministerial Selection under Mixed-Member Systems
-Does Intra-District Polarization Cause Party Polarization in Congress?
-Intra-Party Dynamics and Preferences for Electoral System Change in Japan
-The Impact of Divided Government on Bill Introduction in State Legislatures in the US (with Nick Lin)
-The Effect of Bicameral Ideological Incongruence on the Legislative Productivity of the US State Legislatures
-The Sources of Complexity: Measuring and Explaining the Dimensionality of Ideological and Party Perceptions (with Royce Carroll)
(More projects will be added very soon.)