It is extremely difficult for one party to control the presidency for more than 8 years historically. The American people are always looking for change.
Bush I followed Reagan, who was extremely popular. Obama is not a popular president. A Dem winning the 2016 presidency is almost an impossibility.
Mark
Republicans think they start with an even slate when they run for President
They don't
Democrats have a huge lead in electoral votes before the first vote is even cast
Given the disarray in the GOP clown car, it appears the next Republican President hasn't been born yet. Demographics don't support them