This article updates the Masuoka, Grofman, and Feld 2002 dataset that identified the then-3,719 faculty in political science PhD-granting departments in the United States. That dataset contained information about each faculty member, including date and PhD-granting department, lifetime citation counts, fields of interest, and school of employment. We similarly create a database with the 4,089 currently tenured or tenure-track faculty, along with emeritus faculty, at US PhD-granting departments ca. 2017–2018. Using Google Scholar Profiles, along with manual counts for those who do not have a profile, we sort the dataset by citation count, PhD cohort, field of interest, and gender. This article identifies the 100 currently most-cited scholars, the 25 most-cited in each PhD cohort and subfield, the 40 most-cited women scholars, and the 25 most-cited emeriti. The full list of The Political Science 400 is available in an online appendix.