Dissolution of the US into Red and Blue sovereign countries isn't likely to happen in the foreseeable future. The blue and red portions of the US are too economically interdependent for dissolution to be readily feasible absent a catastrophic political crisis, such as a military coup or a Republican president declaring himself dictator for life.

However, if dissolution did happen, it wouldn't necessarily be a bad thing. Most of America's current political strife and dysfunction is caused by incompatible, and increasingly divergent, visions for America's future. Splitting the country is the only way for those two visions to get what they want without persecuting (or killing) large numbers of people.