Republican pollster Jan van Lohuizen, in a memo written for RNC chairman Ken Mehlman, warns that if members of Congress try to drive a wedge between themselves and Pres. Bush, it'd be akin to adding weight to an anchor. GOpers are "W Brand Republicans" whether they like it or not. And van Louhizen, who has polled (often secretly) for the Bush White House under the RNC aegis for years, is worried about low turnout. Time Magazine first reported on the memo this weekend, but the full text is below.