By Sam Stein
CHARLOTTE, N.C. -- The first night of the Democratic convention will be defined by the soaring and moving speech from First Lady Michelle Obama. It will be remembered as the night San Antonio Mayor Julian Castro entered the national political stage with a speech that echoed President Barack Obama's own from 2004. For those digging a bit deeper, the most memorable lines from the undercard will be the repeated and increasingly blunt broadsides launched at Mitt Romney's business practices and personal finances.
Underneath it all, however, was a potentially significant effort to recast the debate around the president's most ambitious and controversial achievement -- one that Obama's advisers said they hope will shape voter perceptions heading into the fall.
Nineteen speakers on Tuesday night devoted at least a portion of their speeches to reaffirming the virtues of the Affordable Care Act. At least three proudly called it "Obamacare."
More: DNC 2012: Obamacare Dominates Policy Discussion