This is the 18393rd most frequent Russian word.
электоральных
"Электоральных" means "electoral" in English, relating to elections or voting.
Here, "электоральных" is an adjective describing the noun "изменений" (changes), indicating that the changes mentioned pertain to electoral processes or phenomena.
Электоральных изменений в стране давно заметно не происходило.
Electoral changes in the country have not been noticeable for a long time.
In this example, "электоральных" qualifies "предпочтений" (preferences), signifying that the preferences are related to voter choices or attitudes.
Влияние электоральных предпочтений на политику оказалось значительным.
The influence of electoral preferences on politics turned out to be significant.
The word "электоральных" here modifies "процессов" (processes), focusing on processes that are related to elections or electoral systems.