Photographer: Heather Coit

Cheryl Bryson, left, shares her thoughts with Veda Britt-Hardy about Democratic presidential hopeful Barack Obama after a Women for Obama luncheon at the Hilton in Chicago on Monday, April 16, 2007.

Photographer: Heather Coit

Democratic presidential hopeful Barack Obama addresses an audience as Milwaukee mayor Tom Barrett listens during a fundraiser at the Milwaukee Theatre on Monday, April 16, 2007.

Photographer: Heather Coit

Siblings perform 'God Bless America' at a fundraiser for Democratic presidential hopeful Barack Obama at the Milwaukee Theatre on Monday, April 16, 2007.

Photographer: Heather Coit

Democratic presidential hopeful Barack Obama speaks at a Women for Obama luncheon at the Hilton in Chicago on Monday, April 16, 2007.

Photographer: Heather Coit

Democratic presidential hopeful Barack Obama speaks at the Milwaukee Theatre.

Photographer: Heather Coit

Barack Obama speaks at a Women for Obama luncheon at the Hilton in Chicago on Monday, April 16, 2007.

Photographer: Heather Coit

Barack Obama sets a more somber mood as the Virginia Tech shootings were on everyone's mind at the Milwaukee Theatre on April 16, 2007.

Photographer: Heather Coit

Michelle Obama, wife of Democratic presidential hopeful Barack Obama, acknowledges the media as she addresses women's issues and later introduces her husband at a Women for Obama luncheon at the Hilton in Chicago.

Photographer: Heather Coit

Barack Obama, whose image is seen on a screen at right, speaks at the Milwauekee Theatre.

Photographer: Heather Coit

Barack Obama waves farewell to the luncheon audience as he receives applause from his wife, Michelle Obama, left, and the audience at a Women for Obama luncheon at the Hilton in Chicago.

Photographer: Heather Coit

Barack Obama addresses the Virginia Tech shootings, which happened earlier that morning, as Milwaukee mayor Tom Barrett looks on.

Photographer: Heather Coit

Barack Obama kisses his wife, Michelle, after speaking at the Women for Obama luncheon at the Hilton.

Photographer: Heather Coit

Presidential candidate Barack Obama, lower left, greets his supporters following a fundraiser at the Milwauekee Theatre on April 16.

Photographer: Heather Coit

Barack Obama tries to make his way through the press after speaking at the Women for Obama luncheon.

Photographer: Heather Coit

Barack Obama waves farewell to supporters following a fundraiser at the Milwauekee Theatre.

Photographer: Heather Coit

Barack Obama, seen from the balcony, speaks at the Women for Obama luncheon.

Photographer: Heather Coit

Early arrivers show their support for Democratic presidential hopeful Barack Obama before a fundraiser at the Milwauekee Theatre on April 16, 2007.

Photographer: Heather Coit

Zach Hofeld, a freshman at Harvard, and Tommy Molitor, a freshman at Marquette University, show their support for Democratic presidential hopeful Barack Obama after a fundraiser at the Milwauekee Theatre.

Photographer: Heather Coit

Illinois Attorney General Lisa Madigan, right, enjoys herself before Barack Obama speaks at the Women for Obama luncheon.

Photographer: Heather Coit

Barack Obama greets fans after a fundraiser at the Milwauekee Theatre on Monday, April 16, 2007.

Photographer: Arian Schuessler

Democratic presidential hopeful Sen. Barack Obama shakes hands with Robert "B.J." Jackson during a campaign stop in Mason City, Iowa on Wednesday, April 4, 2007. Jackson, lost his legs to a land mine while serving in Iraq with the the 186th Company of the Iowa National Guard in 2003.

Photographer: Arian Schuessler

Obama suporters listen to the senator speak at North Iowa Area Community College.

Photographer: Arian Schuessler

Barack Obama addresses the audience at North Iowa Area Community College in Mason City, Iowa.

Photographer: Arian Schuessler

Barack Obama speaks at a rally North Iowa Area Community College in Mason City, Iowa.

Photographer: Arian Schuessler

Barack Obama speaks at a rally North Iowa Area Community College in Mason City, Iowa, on April 4, 2007.

Photographer: Arian Schuessler

Presidential hopeful, Sen. Barack Obama speaks at a rally North Iowa Area Community College in Mason City, Iowa, on Wednesday, April 4, 2007.

Photographer: Arian Schuessler

Barack Obama listens to veterans at the Elks Lodge in Mason City, Iowa.

Photographer: Arian Schuessler

Sen. Barack Obama speaks to veterans about veterans issues at the Elks Lodge in Mason City, Iowa, on April 4, 2007.

Photographer: Arian Schuessler

Barack Obama speaks to a group of veterans including Robert "B.J." Jackson during a campaign stop in Mason City, Iowa on Wednesday, April 4, 2007. Jackson, lost his legs to a land mine while serving in Iraq with the the 186th Company of the Iowa National Guard in 2003.