This is the 3577th most frequent Turkish word.
seçmenlerin
"Seçmenlerin" means "of the voters" or "the voters'".
In this sentence, 'Seçmenlerin' shows the possessive form of 'voters' referring to something belonging to them, specifically 'opinions'.
Seçmenlerin fikirlerini ifade etmeleri demokrasinin temelidir.
The expression of voters' opinions is the foundation of democracy.
Here, 'Seçmenlerin' introduces a specific part of the voters, indicating 'many of the voters'.
Seçmenlerin birçoğu bu seçimde oy kullanacak.
Many of the voters will vote in this election.
'Seçmenlerin' here illustrates possession, specifying 'the indecision' as attributed to the voters.