This is how I view it. So I suppose you can look at the same thing in two different ways. You see it as a betrayal, and I see it as a political mistake that caused a backlash that affected the party and the future for that matter.
Now I see the answer being proffered is to do more of the same, only with more emphasis!
So you see, this causes me a great deal of heartburn, but they make pill for that, as I have discovered.
The way I see it is a politician emphasizes different issues in the general than the primary, tempered of course by the political makeup of the area in which you live.