“…Although comparably early efforts found differences based on ideological directions (e.g. Gibson, 2004;Kalnes, 2009;Lilleker & Malagón, 2010;Vaccari, 2008a), more recent publications appear to find a decreasing effect of ideology on the online performance of politicians (Lilleker et al, 2011), suggesting an ongoing process of "deideologization" (Schweitzer, 2008)-especially tangible, it would seem, in the context of Twitter use (Vergeer & Hermans, 2013;Vergeer et al, 2012). To test for the influence of incumbency and ideologies on the permanence of Twitter use, the status of the eight party groups to which each representative belongs was noted in the data set.…”