Something that is both very interesting and very pertinent to his topic, is that Theodore Roosevelt (who at that point in time was just as unambiguously to the left of the median Republican politician as he was both before and after that point in time) strongly considering voting for Cleveland in 1884, but decided against it only so that he would more likely be able to climb the ranks of the Republican Party in his career afterwards. (If anything, this would suggest that Teddy lied between Cleveland and the Republican Party's corpus on any "left-right" political spectrum.)
Also, Teddy was unambiguously more "imperialist" and less liberal-internationalist than Cleveland.
TR and Cleveland, IIRC, got along fairly well when the former was a state senator during the latter's governorship. They eventually had a falling out over Cleveland's refusal to break a gov't contract that was found to be wasteful (an issue of honoring commitments vs the state's duties to its taxpayers, if you will).
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