He's led 3 of the last 5 national polls (not counting the ever-unreliable Zogby Interactive), albeit not by very much. Even in the polls where he's not leading, he's been within four points of the lead in every single national poll taken in the last ten months.
He's led in the most recent polls in CA, FL, MI, NV, and others. And oh yeah, he leads NH by more than 20 points. Clearly, he must be doomed.
Given his business experience and, more importantly, his current adversaries, he's struggling. To be tied, trailing, or barely leading a half term governor, an ethical cloud, and a Baptist minister is the definition of struggling. That's my view.
Business experience is almost completely irrelevant to success in high office. Experience in elected office, cabinet posts, and high-ranking military service is far more relevant to the Presidency.
Politicians of all kinds are now held in low esteem. Obama is more popular than either branch of Congress and both Parties in Congress, suggesting that he is doing relatively better than about anyone on the national scale. .