Ok I will attempt to be the first here. I doubt Perot would have pulled the same numbers back in 1988 as he did in 1992. First off we were not in a recession in 1988 the economy was fairly good and not the number 1 issue of the day. If he ran an anti washington individual freedom campaign he may have been lucky enough to pull half of his 1992 national total for around 10% of the popular vote (I still doubt he would pull any media attention in 1988- again no economic issue to run on)
So on the above map I kept both the Republican and Democratic winning margins above 30%. Perot is still a spoiler and pulls more republican voters then democratic ones. Here is a Dukakis victory. Before your eyes grow big at South Dakota-remember he polled 46% in a two way race against Bush in both SD and MT. Likely due to the farm crisis so a Perot spoiler could easily give him both states.
Dukakis/Bentsen 271 45%
Bush Quayle 267 45%
Perot Simon 0 9%
Others 1%