TNR: 2012 Not Like 2008

William Galston who writes politics for The New Republic lists, and explains, seven reasons why President Obama will have more difficulty in being reelected than he had getting elected. Here are Galston's seven reasons, without the explanations:

2012 will be a referendum, not a choice.
No more promises of bipartisanship.
No more "Yes, we can."
No more youth movement.
Blue-state big business has moved on.
Selecting a campaign message will be a zero-sum choice.
Obama is no longer the master of his fate.

All of those look defensible to me. Remember, this article is from someone who wishes Obama well and hopes he is reelected.