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Address

Gakushuin University Faculty of Law
1-5-1 Mejiro Toshima-ku
Tokyo 171-8588 Japan

Mail

Local: hirofumi.miwa
Domain: gakushuin.ac.jp

Positions

2023–present: Professor, Department of Political Studies, Faculty of Law, Gakushuin University.
2024–2025: Visiting Scholar, Program on U.S.-Japan Relations, Weatherhead Center for International Relations, Harvard University.
2016–2023: Associate Professor, Department of Political Studies, Faculty of Law, Gakushuin University.
2022–2023: Part-time Lecturer, College of Law and Politics, Rikkyo University.
2013–2016: Research Fellow of the Japan Society for the Promotion of Science.

Education

2018: Ph.D. in Political Science. The University of Tokyo.
2013: M.A. in Law. The University of Tokyo.
2011: B.A. in Law (with honor). The University of Tokyo.

Research interests

Voter ideology, partisanship, government approval, gender stereotypes, and ideal point estimation (mainly in Japanese politics).

Publications

Peer-reviewed articles (in English)

• 1. Hirofumi Miwa, Kazuhiro Atsumi, Naofumi Fujimura, Yoshinobu Kano, and Naoto Nonaka. 2025+. “Compromise or Differentiate? The Role of Partner Popularity in Coalition Parties’ Strategic Parliamentary Speech.” Journal of Legislative Studies. Published online ahead of print.

  2. Hirofumi Miwa and Ikuma Ogura. 2025+. “Do Politicians’ Genders Influence Voter Persuasion?” Political Communication. Published online ahead of print.

  3. Yoshikuni Ono, Yuko Kasuya, and Hirofumi Miwa. 2025. “Analyzing Gender Gaps in Bicameral Legislatures: How Asymmetrical Institutions Affect the Supply and Demand for Female Candidates.” Legislative Studies Quarterly 50 (3): e12493.

  4. Hikaru Nukui, Hirofumi Miwa, and Yoshikuni Ono. 2025. “Preferences for Female Successors: Evidence from a Survey Experiment among Japanese Local Politicians.” Electoral Studies 96: 102956.

  5. Fumiya Uchikoshi, Hirofumi Miwa, and Yoshikuni Ono. 2025. “Gendered Expectations for College Applications: Experimental Evidence from a Gender Inegalitarian Education Context.” Research in Higher Education 66 (5): 29.

  6. Hirofumi Miwa. 2025. “Why Voters Prefer Politicians with Particular Personal Attributes: The Role of Voter Demand for Populists.” Political Studies 73 (2): 725–752.

  7. Hirofumi Miwa. 2025. “Assessing the Conservative Nature of the Supreme Court of Japan via Ideal Point Estimation of Justices.” Journal of Empirical Legal Studies 22 (2): 186–215.

  8. Naoto Nonaka and Hirofumi Miwa. 2025. “Party Theory of Parliamentary Debate and the Endogenous Nature of Parliamentary Institutions: Theoretical Implications from Japan’s Diet.” Party Politics 31 (1): 187–197.

  9. Takaya Kanno and Hirofumi Miwa. 2024. “Military Threats, International Pressure, and Public Opinion on the Nuclear Ban Treaty in Japan.” Journal for Peace and Nuclear Disarmament 7 (2): 446–467.

  10. Yuko Kasuya and Hirofumi Miwa. 2023. “Pretending to Support? Duterte’s Popularity and Democratic Backsliding in the Philippines.” Journal of East Asian Studies 23 (3): 411–437.

  11. Yoshikuni Ono and Hirofumi Miwa. 2023. “Gender Differences in Campaigning Under Alternative Voting Systems: Analysis of Election Manifestos.” Politics, Groups, and Identities 11 (5): 1203–1211.

  12. Hirofumi Miwa, Yuko Kasuya, and Yoshikuni Ono. 2023. “Voters’ Perceptions and Evaluations of Dynastic Politics in Japan.” Asian Journal of Comparative Politics 8 (3): 671–688.

  13. Hirofumi Miwa, Reiko Arami, and Masaki Taniguchi. 2023. “Detecting Voter Understanding of Ideological Labels Using a Conjoint Experiment.” Political Behavior 45 (2): 635–657.

  14. Cleo Anne A. Calimbahin, Yuko Kasuya, and Hirofumi Miwa. 2023. “Is the Justice Frame Effective in Mobilizing Support for Human Rights Violations? Evidence from the Philippines.” Asian Affairs: An American Review 50 (2): 77–94.

  15. Ikuma Ogura, Hirofumi Miwa, and Takeshi Iida. 2022. “What Do You Mean by ‘Democrat’ and ‘Republican’? Evidence from a Conjoint Experiment.” International Journal of Public Opinion Research 34 (1): edab025.

  16. Hirofumi Miwa, Musashi Happo, and Kaho Odaka. 2022. “Are Voters Less Persuaded by Female Than by Male Politicians’ Statements? A Survey Experiment in Japan.” Journal of Elections, Public Opinion and Parties 32 (2): 429–438.

  17. Akira Igarashi, Hirofumi Miwa, and Yoshikuni Ono. 2022. “Why Do Citizens Prefer High-Skilled Immigrants to Low-Skilled Immigrants? Identifying Causal Mechanisms of Immigration Preferences with a Survey Experiment.” Research and Politics 9 (2).

  18. Tomoki Kaneko, Taka-aki Asano, and Hirofumi Miwa. 2021. “Estimating Ideal Points of Newspapers from Editorial Texts.” International Journal of Press/Politics 26 (3): 719–742.

  19. Hirofumi Miwa. 2018. “Value Preferences and Structures among Japanese Voters and Political Candidates.” Japanese Political Science Review 4: 61–85.

  20. Hirofumi Miwa. 2018. “Can Reshuffles Improve Government Popularity? Evidence from a ‘Pooling the Polls’ Analysis.” Public Opinion Quarterly 82 (2): 322–342.

  21. Kentaro Fukumoto and Hirofumi Miwa. 2018. “Share the Name, Share the Vote: A Natural Experiment of Name Recognition.” Journal of Politics 80 (2): 726–730.

  22. Hirofumi Miwa and Masaki Taniguchi. 2017. “Heterogeneity in Voter Perceptions of Party Competition in Multidimensional Space: Evidence from Japan.” International Political Science Review 38 (5): 673–689.

  23. Hirofumi Miwa. 2015. “Voters’ Left–Right Perception of Parties in Contemporary Japan: Removing the Noise of Misunderstanding.” Japanese Journal of Political Science 16 (1): 114–137.

Peer-reviewed articles (in Japanese)

• 1. Hirofumi Miwa. 2017. “Twitter Deta ni Yoru Nihon no Seijika, Genronjin, Seito, Media no Ideorogi Ichi no Suitei (Estimating the Ideology of Japanese Politicians, Political Commentators, Political Parties, and News Media Using Twitter Data).” Senkyo Kenkyu 33 (1): 41–56.

  2. Hirofumi Miwa. 2016. “Seijigaku ni Okeru Bubunteki Kansatsu Kanousei o Tomonau Purobitto Moderu to Sono Kakucho: Yukensha no Ideorogi no Moderuka o Rei to Shite (Partial Observability Probit Models and Its Extension in Political Science).” Kodo Keiryogaku 43 (2): 113–128.

  3. Hirofumi Miwa. 2014. “Gendai Nihon ni Okeru Souten Taido no Ideorogiteki Ikkansei to Seijiteki Senren: Converse no Jubaku o Koete (Ideological Consistency across Issues and Political Sophistication in Contemporary Japan).” Nenpo Seijigaku 65 (1): 148–174.

Non-peer-reviewed articles (in Japanese)

• 1. Hirofumi Miwa. 2023. “2021 Nen Sosenkyo ni Okeru Yukensha no Seisaku Senko oyobi Soten no Juyodo to Tohyo (Policy Preferences, Issue Importance, and Vote Choice in the 2021 Japanese General Election).” Senkyo Kenkyu 38 (2): 48–62.

  2. Hirofumi Miwa and Masaki Taniguchi. 2021. “Ideologi ni Chakumoku Shita Nihon no Seinen no Seijiteki Seijukudo no Kento (Political Maturity of Japanese Adolescents in Terms of Ideology).” Kokyo Sentaku 75: 81–101.

  3. Hirofumi Miwa and Shiro Sakaiya. 2020. “Sengo Nihonjin no Kenpo Ishiki: Yoron Chosa Shusekiho ni Yoru Bunseki (Public Opinion on Constitutional Revision in Postwar Japan).” Nenpo Seijigaku 71 (1): 34–57.

Discussion papers (in English, excluding those later published in academic journals)

• 1. Yoshikuni Ono, Hirofumi Miwa, and Yuko Kasuya. 2025. “Voting for Gender Balancing? The Effect of a Multiple-Vote System on Women’s Representation.” RIETI Discussion Paper Series 25-E-047.

  2. Fumiya Uchikoshi, Yoshikuni Ono, Hirofumi Miwa, and James M. Raymo. 2024. “Revisiting Marriage Market Mismatch: A Conjoint Survey Experiment Approach.” CSRDA Discussion Paper Series No. 105.

  3. Akira Igarashi, Hirofumi Miwa, and Yoshikuni Ono. 2022. “How Do Racial Cues Affect Attitudes toward Immigrants in a Racially Homogeneous Country? Evidence from a Survey Experiment in Japan.” RIETI Discussion Paper Series 22-E-091.

Discussion paper (in Japanese)

• 1. Hirofumi Miwa. 2017. “Gendai Nihon ni Okeru Shinnen Taikei no Fukinshitsusei: Kongo Bunpu Moderu ni Yoru Apurochi (Heterogeneity in Belief Systems in Contemporary Japan).” SSJ Data Archive Research Paper Series 58: 113–153.

Book chapters (in Japanese)

• 1. Hirofumi Miwa. 2025. “Seiji Ishiki Kenkyu no Hoho (Methods for Studying Political Attitudes).” Masahiro Zenkyo (ed.). Seiji Ishiki Kenkyu no Saizensen. Kyoto: Horitsu Bunkasha.

  2. Hirofumi Miwa. 2018. “‘Kanjo Ondo’ ga Arawasu Mono: Tokyo Daigaku × Asahi Shimbunsha no Yoron Chosa kara (What the Feeling Thermometer Represents).” Toru Yoshida (ed.). Mini no Hakarikata: “Yoron Chosa × Minshushugi” o Kangaeru. Kyoto: Horitsu Bunkasha.

Book review (in English)

• 1. Hirofumi Miwa. 2021. A review of Ideorogī to Nihon Seiji: Sedai de Kotonaru Hoshu to Kakushin (Generational Gap in Japanese Politics: A Longitudinal Study of Political Attitudes and Behaviour). Social Science Japan Journal 24 (1): 249–252.

Book reviews (in Japanese)

• 1. Hirofumi Miwa. 2019. A review of Shakai Kagaku no Tame no Deta Bunseki Nyumon. Kokyo Sentaku 71: 168–172.

  2. Hirofumi Miwa. 2018. A review of Nihon no Netto Senkyo: Reimeiki kara 18 Sai Senkyoken Jidai made. Leviathan 63: 142–145.

  3. Hirofumi Miwa. 2018. A review of Koki Kindai to Kachi Ishiki no Henyo: Nihonjin no Ishiki 1973–2008. Shakai to Chosa 20: 108.

  4. Hirofumi Miwa. 2016. A review of Seiji Kodoron: Yukensha wa Seiji o Kaerareru no ka. Senkyo Kenkyu 32 (2): 105–107.

  5. Hirofumi Miwa. 2016. A review of Rethinking Japanese Public Opinion and Security: From Pacifism to Realism? Kokka Gakkai Zasshi 129 (3･4): 399–401.

  6. Hirofumi Miwa. 2012. A review of Changing Politics in Japan. Kokka Gakkai Zasshi 125 (7･8): 407–409.

Other publications (in Japanese)

• 1. Hirofumi Miwa. 2023. “Ideologi o Do Sokutei Suru ka (How Can We Measure Ideology?).” Sanshokuki 847: 3–10.

  2. Kanami Sugiyama, Tetsuji Kuboyama, Hirofumi Miwa, and Takeaki Uno. 2022. “Maikuro Kurasutaringu o Mochiita Senkyo Koho Tekisuto Bunseki (Analysis of Election Manifestos by Microclustering).” Jinmonkon 2022 Ronbunshu: 289–294.

  3. Hirofumi Miwa. 2022. “Gendai Seiji ni Okeru Ideorogi no Yakuwari (The Role of Ideology in Contemporary Politics).” Horitsu Jiho 94 (8): 18–23.

  4. Hirofumi Miwa. 2021. “Koronaka ni Okeru Yoron ni Kansuru Kenkyu Doko (Review of Public Opinion Studies under the COVID-19 Pandemic).” Tokei 72 (11): 25–30.

  5. Naoto Nonaka, Tetsuji Kuboyama, and Hirofumi Miwa. 2021. “Gikai Shingi Kiroku no Denshi Deta Seibi no Kakucho to Seiji Bunseki e no Oyo (Expanding the Data Collection of Legislative Records and Its Application to Political Science).” Gakushuin Daigaku Keisanki Senta Nenpo 41: 15–26.

  6. Naoto Nonaka, Tetsuji Kuboyama, and Hirofumi Miwa. 2020. “Chiho Gikai Shingi Kiroku no Denshi Deta Seibi to Seiji Bunseki e no Oyo (Data Collection of the Minutes of Local Assemblies and Its Application to Political Science).” Gakushuin Daigaku Keisanki Senta Nenpo 40: 48–52.

  7. Masaki Taniguchi, and Hirofumi Miwa. 2015. “2014 Nen Sousenkyo: Nekkyo Naki Yoto Assho no Haikei (The 2014 General Election).” Sekai 867: 188–197.

  8. Masaki Taniguchi, Michio Umeda, Sohn Jeyong, and Hirofumi Miwa. 2013. “2012 Nen Shuinsen･2013 Nen Saninsen: Minshuto Hyou wa Doko ni Kieta no ka (The 2012 General Election and the 2013 House of Councilors Election).” Sekai 849: 220–228.