straw vote vs straw poll

straw vote and straw poll both are nouns.

Word	Noun	Adjective	Verb	Adverb
straw vote	Yes	No	No	No
straw poll	Yes	No	No	No

As nouns, straw vote and straw poll are synonyms defined as:

straw vote and straw poll: an unofficial vote taken to determine opinion on some issue

straw vote (noun)	straw poll (noun)
an unofficial vote taken to determine opinion on some issue	an unofficial vote taken to determine opinion on some issue