The balloons have dropped in Tampa, and now it’s the Democrats’ turn.

After three days of Republican denunciations of President Obama, Democrats will have their chance to respond next week in Charlotte, N.C., and party leaders are signaling Obama and his allies will be aggressive in attacking back.

Officials say Obama and his allies plan to focus heavily on Mitt Romney’s record as a business executive and as governor of Massachusetts — areas they say Republicans glossed over in Tampa.

Yet Democratic officials acknowledge their challenge will be to go beyond returning fire with fire, combining attacks on Romney with an affirmative case for Obama.