I haven't seen any media give the overall popular vote for all seven primaries combined so I calculated it from the WaPost web site:
Kerry - 535,000 39.9%
Edwards - 349,700 26.1%
Clark - 213,900 16.0%
Dean - 113,400 8.5%
Lieberman - 62,300 4.6%
Sharpton - 48,100 3.6%
Kucinich - 18,000 1.3%
Gives a good sense of the outcome; Kerry wins big but not huge; Edwards beats Clark decisively (mainly due to an 85,000 margin in Missouri); Dean does abysmally.