District Attorney Devon Anderson launched a television advertisement Wednesday that said her opponent would let drug criminals run free and make the community less safe in the first negative advertisement of Harris County’s closest race.

“Kim Ogg isn’t just wrong. She’s dangerous,” says the narrator in the 30-second spot, Anderson’s second. “But Devon Anderson is tough on crime.”

The first 10 seconds of the ad portrays drug addicts as uncontrollable and uses images of burglary and assaults with a firearm to tell voters that Ogg would decline to prosecute these criminals. The central debate in the dead-heat race has revolved around Ogg’s plan to not prosecute low-level drug offenders, like those arrested for having small amounts of marijuana.

“The Harris County District Attorney cannot pick and choose which laws to enforce and which laws to ignore, simply because they don’t like them. I will follow the law,” Anderson said in a statement.

At a press conference on Wednesday, Ogg struck back at Anderson and defended her platform on drugs.

“That’s a below-the-belt strike that’s simply untrue. It’s a desperate move by an appointed interim DA not qualified to lead,” Ogg said.

Anderson’s first spot, released earlier this month, focused on her biography. Ogg followed last week with her own spot on cable television, but she has spent five times fewer dollars on the air than has Anderson, who has enjoyed a consistent cash advantage throughout the race.

The new spot is airing in Houston on CBS, NBC, ABC and FOX.