party boss vs political boss

party boss and political boss both are nouns.

Word	Noun	Adjective	Verb	Adverb
party boss	Yes	No	No	No
political boss	Yes	No	No	No

As nouns, party boss and political boss are synonyms defined as:

party boss and political boss: a leader in a political party who controls votes and dictates appointments

Other synonyms of party boss include boss.

party boss (noun)	political boss (noun)
a leader in a political party who controls votes and dictates appointments	a leader in a political party who controls votes and dictates appointments