Renominating Obama gets the Democrats 15% of the vote. Between actual alienation and just lower turnout, not renominating him costs them at least half of that 15%. Obama would have to be videotaped molesting small children to avoid being renominated. For better or worse, he's running again in 2012.
Iran's oil exports to South Korea quadruple to 400,000 barrels a day after sanctions lift (Reuters)
from the article: Democrats split on whether Obama should serve a second presidential term