“…Social media platforms have become a key resource for research on political participation and discourse (see Haq et al (2020) and Theocharis and Jungherr (2021) for overviews). Studies have investigated a wide range of phenomena including political polarization (Adamic and Glance 2005;Conover et al 2011;Himelboim, McCreery, and Smith 2013;Weber, Garimella, and Batayneh 2013;Garcia et al 2015;Garimella et al 2018;Morales et al 2019), ideological radicalization (Grover and Mark 2019;Crawford, Keen, and Suarez-Tangil 2021;Mamié, Ribeiro, and West 2021), and political framing (Demszky et al 2019;Mendelsohn, Budak, and Jurgens 2021;Reiter-Haas, Kopeinik, and Lex 2021). Since many subreddits are political discussion groups (e.g., r/politics), sometimes even with explicit ideological orientation (e.g., r/Conservative, r/Liberal), Reddit has become a particularly popular resource for studies on online political discourse (Nithyanand, Schaffner, and Gill 2017;An et al 2019;Grover and Mark 2019;Guimaraes et al 2019;Soliman, Hafer, and Lemmerich 2019;Marchal 2020;Rajadesingan, Resnick, and Budak 2020;Waller and Anderson 2021).…”