write-in vs write-in candidate

write-in and write-in candidate both are nouns.

Word	Noun	Adjective	Verb	Adverb
write-in	Yes	No	No	No
write-in candidate	Yes	No	No	No

As nouns, write-in and write-in candidate are synonyms defined as:

write-in and write-in candidate: a candidate for public office whose name does not appear on the ballot and so must be written on the ballot by the voters

write-in (noun)	write-in candidate (noun)
a vote cast by writing in the name of a candidate who is not listed on the ballot	a candidate for public office whose name does not appear on the ballot and so must be written on the ballot by the voters
a candidate for public office whose name does not appear on the ballot and so must be written on the ballot by the voters