the Dooms day scenario is a knee jerk reaction. This country, is not going to stay stagnant. You are making the same mistake, that the Republicans are. You need to look at history. The key words are population growth and Demographics.
Right now the African American population is estimated at 45 million people and 14 percent of the population. The Hispanic\Latino population is 52 million. The white population is over 200 million which includes white and non hispanic white. You also have other races with an overall estimation of 315 million people in the United States.
By 2050, that estimation goes over 400 million people according to International Institutions. It is estimated by 2050, the European white population will fall in the minority with an estimated 46 percent over all. You have to consider population migration with growth. That means as areas get crowded, people migrate to less populated areas. The most land space are in those Red States. So the Republican Party is fighting a losing battle over time. That is the biggest threat to the Republican Party if they continue to ignore the interests of other Demographics. It will continue every election. They cannot sustain it. They cannot fight time or the future. Minority birth rates are also growing at a faster rate than whites. And the thing about the Hispanic vote, only over 3 percent are Cuban American. Even that vote is divided between younger Cubans and older generations that support republicans. President Obama won the Cuban vote over Republicans for the first time in a long time. That means the older generation is fading. Sooner or later the Republicans are going to have to face reality. It is better to adjust now, then later.