Not just Oz, but every Republican should be running ads showing the violence in Dem run cities: the shutting down of speakers on college campuses, the homeless taking over cities, the freaks in public schools, the lost money in 401Ks and pound it home, illegals pouring over the border, this is what happens when democrats rule.
Well, if your theory of the GOP were correct, then they would be doing exactly that.
Have you given much thought to why they don't?