President Obama's approval numbers are starting to mimic Mitt Romney's. According to a new YouGov poll, it's the rich -- not the poor or middle class -- who back Obama more despite his 2012 campaign attacking the rich. The poll for the Economist found that fewer than half of those with incomes less than $100,000 per year approve of Obama's performance, while he enjoys a 54 percent approval rating among those with incomes higher than that. Those earning less than $40,000 a year disapprove of the president's performance, 51 percent to 45 percent. Those earning $40,000 to $100,000 disapprove by...