What is the primordial principle that creates the need and drive for political parties in any polity to merge? Of course it is all about the consolidation of the “owned” political capital and the strategic acquisition of the political “wealth” that is perceived to be somewhat potent and relatively easy to be decoyed.
The political mergers, whether through the formation of coalitions or dissolution of the political parties, seek to ensure that the activity of capturing political power and formation of government is enhanced. After all, this (capturing of power) is the primary end of the existence of political parties and therefore, the mergers only serve as a means.