“…We chose a specific focus on surveys and digital trace data for this special issue. This excludes the combination of survey data with, for example, paradata (e.g., Roßmann & Gummer, 2015), geo data (e.g., Schweers, Kinder-Kurlanda, Müller, & Siegers, 2016), administrative records (e.g., Schnell, 2014), eye tracking (e.g., Vraga, Bode, & Troller-Renfree, 2016), or traditional forms of media content such as television or newspaper coverage (for a review, see de .…”