“…Traditionally, sentiment is measured using manual annotators and a codebook (for examples, see Aday, 2010;Cho, 2013;Dunaway et al, 2015;Elenbaas & De Vreese, 2008;Kleinnijenhuis et al, 2007Kleinnijenhuis et al, , 2019Martins et al, 2013;McCombes et al, 2000;Meijer & Kleinnijenhuis, 2006;Muddiman & Stroud, 2017;Nagel et al, 2012;Natarajan & Xiaoming, 2003;Rodgers & Thorson, 2003;Shah et al, 2007). Manual coding is expensive, however, and even when using extensive training programs high levels of reliability are not always achieved (Weber et al, 2018).…”