“…Party identity was first studied in the 1960s, and was quickly identified to function as a ''perceptual screen'' through which political information is filtered and interpreted (Campbell et al, 1960). Evidence from time-series, panel, and experimental studies have supported this view (Brewer, 2005;Cohen, 2003;Converse & Markus, 1979;Gerber & Jackson, 1993;Goren et al, 2009;Green et al, 2002;Layman & Carsey, 2002;Layman et al, 2006;Lupia & McCubbins, 1998;Rahn, 1993).…”