Your challenge, would you choose to accept it, is to have the Dakota Territory becoming the State of Dakota, instead of splitting into 2 like in OTL. The POD must be no earlier than January 1, 1862.
My thoughts exactlyExtraordinarily easy. Cleveland is reelected in 1988.
That's your guidepost?though if the U.S. from TL-191 could do it, then it isn't anywhere near implausible, either, in my book.