- The economy is even worse for Obama's base.
- Another Mideast war could doom Obama.
The Great Recession has been particularly tough on young people and African-Americans. The unemployment rates of both groups have been especially high.
An Israeli attack on Iran forces the President to choose between another two key Obama constituencies: pro-Israel American Jews and peaceniks. Whatever he decides to do alienates one of these groups.
In neither of these situations are angered Democrats likely to vote Republican, but they may very well decide no one running in either party represents them and stay home.
The other four reasons Obama could lose aren't bad either.