This is the 2984th most frequent Turkish word.
adayının
"Of your candidate" or "of the candidate."
The word 'adayının' here refers to someone who is a candidate ('aday') represented in the possessive form indicating 'your candidate' within the context of 'this election'.
Bu seçimdeki adayının ne kadar çalıştığını biliyor musun?
Do you know how much effort the candidate in this election has put in?
In this sentence, 'adayının' signifies 'your candidate' and is specific to the role of class representative ('sınıf temsilcisi').
Sınıf temsilcisi adayının özellikleri neler olmalı?
What should the characteristics of your class representative candidate be?
Here, 'adayının' is used to mean 'the candidate of' in a possessive form, referring to the specific position of team captain ('takım kaptanı').