Here, CBS/NYT in 6/92: B32, P30, C24
Bush app: 34%
Clinton fav/unfav: 16/40
Perot fav/unfav: 26/20
By all measures, status quo less conducive
But it makes sense to me that you'd want to see *both* Trump approval and likely Dem nominee favorability under at least 35, and probably lower, before there was a real opening