The term 'state-by-state' is a modern American English compound, emerging from the political and administrative context of the United States. Its logic is transparently spatial and procedural, built upon the core noun 'state', which derives from the Latin 'status', meaning a standing, position, or condition of existence. The repetition of 'state' connected by 'by' creates a distributive idiom, literally meaning "proceeding from one state to the next." This construction perfectly captures the methodical, individual attention required in a federal system where laws, elections, or campaigns are organized not nationally as a whole, but sequentially and independently across each constituent jurisdiction.

This is a hyphenated compound phrase formed from the noun 'state', the preposition 'by', and the noun 'state' again. It functions as a fixed adjectival or adverbial unit. The word 'state' originates from Latin 'status' (condition, position), via Old French 'estat'. The preposition 'by' comes from Old English 'bī' (near, at).