“…A number of authors researching the formation of electoral alliances state that alliances form among ideologically compatible parties (Allern and Aylott, 2009;Debus, 2009;Gandhi and Reuter, 2013;Golder, 2006;Greene and Haber, 2016;Ibenskas, 2015;Kellam, 2015;Machado, 2009;Wahman, 2011). Some add to this that alliances among ideologically similar parties are more likely if they have prior experience of cooperation (Debus, 2009;Gandhi and Reuter, 2013;Greene and Haber, 2016;Ibenskas, 2015).…”