She spoke at a fundraiser at the Raleigh Marriott City Center.
"A lot of people and a lot of enthusiasm," said Lt. Gov. Walter Dalton.
Dalton's words were the only clue about the atmosphere inside the event.
There were barriers in all directions at the event. The police and Secret Service kept the media a good distance from the private fundraiser.
"There couldn't be anybody else more passionate than her," said supporter Ann Green.
Michelle Obama's passion was on full display just minutes earlier when she made an unannounced stop at her husband's campaign headquarters in downtown Raleigh. Hugs and handshakes greeted her.
"The overall message is that Barack Obama is doing good things for our country," said Minority Whip Rep. Deborah Ross, of Wake County.
Earlier in the day, the first lady stumped at UNC Greensboro where she spoke to 2,200 supporters. She made the call to get out the vote.
"The president won by 14,000 votes four years ago," said Ross. "We're in play and they're here to win."
Ross said stops like the one in Raleigh are key to the president's success.
Recent visits from Republican Mitt Romney's wife and other surrogates show that the Tar Heel State is a crucial battle ground. A battle ground that will host next month's Democratic National Convention.
"Whether you're a Democrat, a Republican or an Independent, I think you should be very proud that the convention is coming to North Carolina, that we were selected for that event," said Dalton. "That gives us worldwide attention."
The convention officially begins Sept. 4.