“…Modern social science research often relies on bringing together information from different sources to advance our understanding about questions of interest. From studies that seek to explain the differences between self-reported and actual behavior (Ansolabehere and Hersh 2012, Barbera 2015, Meredith and Morse 2015, Berent, Krosnick, and Lupia 2016 Huber 2017, Jackman andSpahn 2018, Bonica 2018); the effects of the national news media on mass public and elite behavior (DellaVigna and Kaplan 2007, Hopkins and Ladd 2014, Arceneaux et al 2016, Martin and Yurukoglu 2017; historical accounts about the electorate (Acharya, Blackwell, and Sen 2016, Spahn 2017, Hall, Huff, and Kuriwaki 2018; the impacts of lobbying activities on trade (Bombardini and Trebbi 2012, Bertrand, Bombardini, and Trebbi 2014, Kim 2017; to studies on clientelism and redistributive politics (De La O 2013, Zucco 2013, 2015, Rueda 2016, etc; scholars have spent considerable amounts of time and effort assembling detailed datasets from multiple sources to conduct sound empirical analyses.…”