About 40% of the Turkish population resides in a province other than the one in which they or their fathers were born. Forty-three percent of such people live in the greater Istanbul metropolitan area (Istanbul, Kocaeli and Yalova provinces) and make up 82% of its population. Whether party preferences differ between migrants and natives, and between migrants from different parts of Turkey are studied with the help of robust regressions. It is shown that 2011 vote shares of the three major political parties at various districts of the metropolitan area in question can be explained by the proportions of immigrants from different regions living at these districts. This conclusion is not altered even after socioeconomic and demographic differences between the districts are controlled. Thus, a strong region-of-origin effect is found on the party choices of internal migrants.

中文翻译：

---

移民组合和选举结果：更大的伊斯坦布尔大都市区的区级分析

大约40％的土耳其人口居住在其父亲出生的省份以外的省份。其中有43％的人居住在较大的伊斯坦布尔都会区（伊斯坦布尔，科贾埃利和雅洛瓦省），占人口的82％。在稳健回归的帮助下，研究了移民与本地人之间以及在土耳其不同地区的移民之间政党偏好是否不同。结果表明，有关大都市地区不同地区的三个主要政党的2011年投票份额可以通过居住在这些地区的不同地区的移民比例来解释。即使控制了地区之间的社会经济和人口差异，这一结论也不会改变。从而，