This word "represntive" may exist in some ex-colonial dialect of the English language( the name "Crankee Yankee" suggests some such origin): but this thread is about English folk-songs, and I am perfectly certain(backed up by my Oxford English Dictionary) that there ain't no such word in English English. "Representative" conveys exactly the meaning we need here. Perhaps Crankee Yankee is an example of rhyming slang?