In this study, it is aimed to determine the districts which show extraordinary votes in 9 election regions and across the country according to the results of the last four general elections (2007, 2011, June 2015 and November 2015) in the parliamentary system. Hence, voting rates data in electoral areas were converted into standard Z scores. In the converted data, districts staying within +/- 2,5 standard deviation distance were determined as extreme values; that is, districts showing extraordinary voting. Furthermore, in this study, the regional distribution of the districts supporting one party over the national average in the two of the elections, at least, three of them and all of them was demonstrated. Therefore, an attempt to provide insight on extraordinary observation discussions on this issue was made by determining which districts became the strongholds of which parties in these elections.