BY THE NUMBERS Campaign spending

By John Bassetti, Ryan Jones, Jordan Cohen, Don Shilling, Tom Williams, Peter H. Milliken, Eric Grosso, Marc Kovac, Harold Gwin, David Skolnick, Greg Gulas, Tim Yovich | May 6, 2008 at 12:00a.m.

Sen. Barack Obama outspent Sen. Hillary Clinton in North Carolina and Indiana.

North Carolina: Obama, $4.9 million; Clinton, $3.5 million.

Indiana: Obama, $5.6 million; Clinton, $3.2 million.

What supporters spent: The Service Employees International Union, backing Obama, spent about $1.1 million. The American Leadership Project, backing Clinton, spent more than $1 million. Most of it went for ads.

Source: Clinton campaign