I live in Colorado at 7,700 feet. Pro football teams learned long ago to come into Denver right before their games as the effects are felt less at first and much more a day or two later. Obama flew in just hours before the debate so altitude was not his problem.
Obama is weak when challenged directly, that’s all. Everyone has been afraid to challenge him due to the race baiting. Romney challenged him without looking racist, and that defense is now gone.
Painful truth.