“…Research summarizing voter preferences with ideological scales has long been conducted (e.g., Enelow and Hinich, ) but has burgeoned in recent years (Barber ; Barberá ; Bond and Messing ; Bonica ; Caughey ; Caughey and Warshaw ; Clinton ; Ellis and Stimson ; Erikson, MacKuen, and Stimson ; Gerber and Lewis ; Griffin and Newman ; Masket and Noel ; Pan and Xu ; Peress ; Rogowski and Tucker ; Saiegh ; Shor, Berry, and McCarty ; Shor ; Stone and Simas ; Tausanovitch ; Tausanovitch and Warshaw , ). Expressing a growing sentiment regarding the superiority of the ideological approach for studying citizens' policy preferences, Lo, Proksch, and Gschwend write that “research on elections and party competition is unthinkable without measures of the ideological positions of voters” (, 205).…”