“…2 Nevertheless, given the challenges involved in developing experimental designs to address key research questions in studies of interest groups, they are relatively rare in research on lobbying (exceptions are Aizenberg, 2023;Dür, 2019;Junk & Rasmussen, 2023;Kalla & Broockman, 2016;La Pira, 2008;Leeper, 2013;McEntire et al, 2015;Miller, 2022;Weber et al, 2012). It is especially rare that an experiment is employed to understand the behavior of interest organizations (but see Miller, 2022;Aizenberg, 2023), rather than legislators (e.g., Kalla & Broockman, 2016;La Pira, 2008) or the public (Dür, 2019;Hartman & Weber, 2009;Junk & Rasmussen, 2023;Leeper, 2013;McEntire et al, 2015). To our knowledge, our experiment is, in fact, the first survey experiment conducted across a large, cross-country sample of interest organizations.…”