“…The second group of approaches finds very different results when dealing with the subject in relation to the territorial dimension, specially the bond between party cohesion and ideological and territorial dimensions (Moon, 2005;McElroy, 2007), as well as the relationship between party cohesion and election rules (Sartori, 1976;Uslaner, 1985;Jacobson, 1990;Mainwaring, 1991;Ames, 1992;Geddes and Ribeiro Neto, 1992;Shugart and Nielson, 1993), especially the greater or lesser tendency to respect the party discipline regarding the single-member per constituency, proportional and combined systems (Massicotte and Blais, 1999;Shugart, 2001;Shugart and Wattenberg, 2001;Kunicova and Remington, 2008), or regarding the election systems that enable competition among several candidates for the same party in general elections, such as the "double simultaneous voting" lists (Ames, 1995;Chang and Golden, 2001;Hix, 2004).…”