DENVER — Michelle Obama has the mission of showing voters a side of her husband that they don’t know or has become blurred.

Barack Obama comes off to many voters as slightly aloof and too cool by half, and John McCain’s efforts to portray him as an elitist have left unfavorable impressions with people.

Enter Obama’s wife with the goal of setting people straight as the featured speaker on the night set aside to introducing people to the Democrats’ choice to carry their banner in November.

Valerie Jarrett is a long-time friend of Barack and Michelle Obama and an adviser who has their ear. She told reporters today that Michelle will speak from the heart about her family, recalling her childhood on Chicago’s south side with a father suffering from multiple sclerosis who pushed his children to succeed.

Her husband, Michelle will remind viewers, endured early years with a single mom who became pregnant at 18 and an absent father who left the family when he was two years old.

“It will be a very personal speech. It will be a very revealing speech,” Jarrett said.

Michelle Obama had this preview in an interview with NPR:

“I know Barack better than anybody. I know him not as a politician but as a husband and a father and a man, and I want to talk about that and why I think he’ll be an extraordinary president. And I want people to understand who we are as a family, what our values are. I think the overall theme is that there really is more that unites us than divides us. And when you think about the values that have shaped our lives, our story is the great American story of success and pulling yourself up, and making lemonade out of lemons.”