Looks like it. I’m sure had Newt stayed with #2, the indiscretion with #1 would not have impacted his moral value as a Presidential candidate.
Few voters held Reagan’s or McCain’s divorces against them. The difference is that Newt (like Giuliani) met #3 while married to #2 and met #2 while married to #1. That constitutes a pattern.
As the old saying goes, “A man who marries his mistress creates a job vacancy.”