The Ad Campaign: Quinn Takes Aim at de Blasio With six days to catch an ascendant rival, Christine C. Quinn has released her first negative ad of the Democratic mayoral primary campaign. "Closer Look," a direct attack on Bill de Blasio, suggests he is a hypocrite for accepting campaign contributions from landlords he had criticized, and seeks to undermine the perception that Mr. de Blasio is tougher than his opponents on New York City's stop-and-frisk policing tactic. PRODUCER SKDKnickerbocker and Mark Guma Communications THE SCRIPT Voice-over: "Bill de Blasio says he's a true progressive, but take a closer look. The Daily News revealed de Blasio took over $50,000 from slumlords on his own list of the city's worst landlords. Slumlords who forced their tenants to live amid rats, mold and squalor. And here's de Blasio on stop and frisk. Bill de Blasio: "You can't eliminate the basic police tactic of stop-and-frisk because it is a valid policing tactic." Voice-over: "Bill de Blasio: not what he says he is. Christine Quinn: endorsed for her record, vision and progressive values. ON SCREEN As a narrator impugns Mr. de Blasio for taking money from slumlords, the phrase "Rats, Mold, and Squalor" appears in red over a photo of a dilapidated building. The minor-chord music, heavy on synthesizers, resembles a villain's theme in a 1980s movie. Mr. de Blasio is seen only in black and white; when Ms. Quinn appears, the ad bursts into color, and the music turns uplifting, as her newspaper endorsements flash on the screen. ACCURACY It is true that Mr. de Blasio, the public advocate, received political contributions from landlords whom he had placed on a "watch list" after tenants complained of poor living conditions at their buildings. Mr. de Blasio's aides say the contributions did not affect the list; some landlords who gave money were removed, but others were not. Ms. Quinn, the City Council speaker, has suggested that Mr. de Blasio shamed the landlords to extract political contributions; there is little hard evidence to support that claim. The quote from Mr. de Blasio suggests that he is a stop-and-frisk supporter. But moments after saying these words in a May interview, Mr. de Blasio continued: "I disagree with anyone who says abolish a tactic we need, but I agree entirely that we have to fundamentally reform it, we have to change the nature of it." SCORECARD Ms. Quinn's team has criticized Mr. de Blasio for a misleading claim, in a previous ad, that he would be "the only candidate to end a stop-and-frisk era that targets minorities." In fact, both candidates want to reform the practice, and although they differ on how to do so, neither would ban it completely. In Ms. Quinn's new ad, the selective editing of Mr. de Blasio's comment is also misleading; it suggests he supports the policing tactic, when he is actually a critic.