candidacy vs electioneering

candidacy and electioneering both are nouns.

Word	Noun	Adjective	Verb	Adverb
candidacy	Yes	No	No	No
electioneering	Yes	No	No	No

As nouns, candidacy and electioneering are synonyms defined as:

Other synonyms of candidacy include campaigning, candidature, political campaign.

candidacy (noun)	electioneering (noun)
the campaign of a candidate to be elected	the campaign of a candidate to be elected
	persuasion of voters in a political campaign