John Kerry hopes to score a knock-out Tuesday when seven states hold their presidential primaries.He's hoping a commanding lead could push Wesley Clark and John Edwards out of the race. He says he'll visit each state before Tuesday. Clark will be in Arizona, New Mexico and Oklahoma, where polls give him the best chance of a breakthrough. Edwards will be in New Mexico and Oklahoma. Howard Dean says he doesn't need to win on Tuesday. His new campaign chief says Dean just needs to garner as many delegates as he can until Wisconsin's primary on February 17th, where he can be Kerry's top challenger. Joe Lieberman is campaigning in Delaware. Tuesday's primaries are in South Carolina, Missouri, Arizona, Delaware, New Mexico, North Dakota and Oklahoma. Copyright 2004 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.