From 2003 to present, the President IAT was available on the Project Implicit demonstration website (https://implicit.harvard.edu/implicit/selectatest.html Click on “President IAT” to try it yourself). The President IAT includes one standard IAT (Donald Trump (Barack Obama before March 27, 2017) (George W. Bush before 2009) vs. One of the previous US Presidents; Good vs. Bad), sets of explicit measures (such as attitudes toward each President), set of demographic questions (race, ethnicity age, political identity etc.), and debriefing questions about how respondents thought about their IAT score after the task. From 2003 to the end of 2017, there are 891,800 session IDs created for President IAT, and the overall completion rate is around 46.6%. There were 530,238 respondents who completed the standard IAT part of the task, which is 59.5% of the total respondents. Under this OSF project, you may download 1) President IAT data sets with IAT score computed, self-report data labeled, and demographic information by year or for all years; 2) codebooks associated with each data set; 3) experiment materials and description of procedure; 4) Skeleton syntax for SPSS to start your own data analysis. The public data sets don't have participants' zip code/postcode to protect privacy. The data sets, however, have state, county, Metropolitan Statistical Area information for respondents who reported US zip codes. Please contact Project Implicit at admin@projectimplicit.net for any question or comment.