From the Wall Street Journal:

President Barack Obama’s efforts to project himself as a protector of the middle class have strengthened him for the general election, while Mitt Romney has gained traction with his argument that he can improve the economy, a new Wall Street Journal/NBC News poll finds.

Some seven months before the election, the survey showed that both men are starting the head-to-head contest with core strengths and myriad challenges. As he has since January, Mr. Obama tops Mr. Romney, the presumptive Republican nominee, by six percentage points in the survey, 49% to 43%, a lead just within the poll’s margin of error.

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