August 22, 2004OP-ED COLUMNISTKerry: Slo-Mo on SwiftiesBy MAUREEN DOWD ASHINGTON — It's easy for the Bushes to stay gallant. They delegate the gutter.There are always third-party political assassins, ostensibly independent, to do the dynasty wet work.W.'s old pal and running partner, Lee Atwater, set up the Bush modus operandi: Lay in the weeds while craftily planting plausibly deniable surrogates to slice up your rival.The New Yorker editor David Remnick, writing in Esquire in 1986, limned the 1980 Congressional race in South Carolina's Second District "between Atwater's man, Republican Floyd Spence, and a Faulknerian figure named Tom Turnipseed At one press...