This is the 780th most frequent Italian word.
elettorale
Relating to elections or the electoral process.
In this sentence, 'elettorale' is used as an adjective describing 'campagna', indicating that the campaign is related to elections.
La campagna elettorale è iniziata questa settimana.
The electoral campaign started this week.
Here, 'elettorale' modifies 'legge', referring to the law governing elections.
Hanno discusso la legge elettorale nel parlamento.
They discussed the electoral law in the parliament.
In this case, 'elettorale' qualifies 'propaganda', showing that the propaganda is associated with elections.