Practice in political parties’ coalition done in the government which is held by
President SBY has created many state affairs problems and it is not effective to run the
presidential government system and to maintain the government stability. Besides, the big
power from the representatives makes presidents powerful and president can influence voting
in that institution. Based on that background above, I state problem as the following: 1. How
is the implication of political parties in the government towards the effectiveness of
governmental administration? 2. How is the implication of political parties’ coalition in the
government towards check and balance mechanism between legislatives (Indonesian
Legislative Assembly) and executives? This research is aimed to collect data which
consequently be analyzed to know how the implication of political parties coalition in the
government towards the effectiveness of governmental administration is and to know how the
implication of implication of political parties coalition in the government towards check and
balance mechanism between legislatives (Indonesian Legislative Assembly) and executives
is. The type of research in law writing / thesis is normative law research, that is a research
focusing on norm (law in book) in form of constitutions. This research needs secondary data
as the main data. The method of collecting data in the thesis is a library research. Normative
law research uses qualitative analysis which involves qualitative measure. Deductive thinking
is used in thinking process to draw a conclusion. By maintaining political parties coalition in
President SBY’s governmental system, it brings effect on the ineffectiveness towards
governmental administration which is labeled by the ‘loss’ of president’s constitutional rights
to determine the cabinet in his hand. Besides, the coalition also impacts on the absence of
check and balance mechanism between legislatives (Indonesian Legislative Assembly) and
government (executives), which can be identified in the ‘loss’ of representatives’
constitutional rights. Government can effectively execute the governmental administration
when president as the head of the government is consistent to carry out the governmental
affairs fitting with the characteristic of presidential system. The Indonesian Legislative
Assembly (legislatives) and government (executives) constantly do their constitutional
functions as mandated by constitution and they keep their independency to facilitate check
and balance mechanism of both institutions, particularly the controlling function of
legislatives (Indonesian Legislative Assembly) towards governmental administration done by
executives.