SEIU and ACORN dominated the New Party in Chicago.
“But the nature of Chicago ACORN is secondary to the inevitable dynamics of the situation. As the single 800 pound gorilla in the Chicago New Party, it doesn’t leave a lot of room for newcomers to participate except on ACORN’s terms. This will make it difficult for the New Party to have a life apart from ACORN.” http://www.chicagodsa.org/ngarchive/ng38.html#anchor1869108
“...the NP is a true “Rainbow Coalition” consisting of both young and aged African-Americans, Hispanics and Caucasians. Although ACORN and SEIU Local 880 were the harbingers of the NP there was a strong presence of CoC and DSA (15% DSA).” http://www.chicagodsa.org/ngarchive/ng42.html#anchor792932