I have heard the word "transactional" used to describe a politician. The online dictionaries I've consulted do not provide a definition that seems to fit. It seems, in context, to mean that the politician is NOT acting out of any ideology or overall policy, but just to be seen as the victor on every action. The dictionaries do not appear to provide a definition like that. I cannot tell from context whether the word is being used as an insult or compliment - or possibly neither