According to the law which is accepted at 13 March 2018, a significant change in our election system has made it possible for the parties to enter the election by making alliances. The d'Hondt distribution method and ten percent election threshold which are important parameters of the system gained different meaning with this change despite that the parameters remained the same. This article aims to describe the functioning of this new system and the possible effects of the listed parameters numerically, to emphasize the importance of making political decisions strategically by showing what extent the parameters are critical to the distribution of chairs and thus fair representation. This operation was evaluated with simulations made through scenarios and a hypothetical distribution of votes which is in accordance with Turkey example along with the comments made. There are four hypotheses tested in the study and conclusively confirmed. In the first hypothesis, it has been proposed that the effect of the electoral threshold can be largely or completely removed by the establishment of alliances. In the second, it has been suggested that in addition to the electoral threshold (even if the threshold is zero), which seat allocation method is chosen has a reducing / increasing effect on fair distributon. According to the third hypothesis, by the nature of d'Hondt seat allocation method which is currently applied, the advantage of both alliance and larger party in alliance will increase as alliances grow. In the fourth, it has been tested that allegation of that the gain of a relatively small party by making alliance in the d'Hondt system was inversely proportional to the size of the other party in alliance. The suggestions that emerged at the end of the study are; the application of one of Hare or Sainte-Laguë distribution methods that will provide more fair representation than d’Hondt, in the d'Hondt system with alliance usage of proportional distribution in the second phase which is the stage of re-distribution of chairs to the alliance partners instead of d’Hondt because of lack of fair representation or choosing another allocation method such as Hare or Sainte-Laguë which do not adversely affect fair representation as d'Hondt.