“If athletes need to be tested for drugs for the biggest race of their lives, shouldn’t candidates be tested for the biggest race of yours?” That’s the question the Defeat Crooked Hillary PAC is asking in a new 30-second ad titled, “Race of a Lifetime.”

The text of the ad is featured on top of Fox 10 News video footage showing Hillary Clinton audibly coughing and asking, “Can I get some water?”

The Super PAC’s call for drug testing the candidates comes just days before Clinton and Trump face off in St. Louis for their second debate on Sunday.

The ad comes as part of a new targeting campaign, which will begin running on Friday. The new ads “are supported by a six-figure ad buy. Each ad will target swing states and undecided voters on Facebook, YouTube and Google,” the Super PAC writes in a press release.

Presumably, neither campaign should have reason to object to drug testing the candidates, as Clinton’s campaign has repeatedly insisted that Clinton is in fine health, and Trump has demonstrated his physical stamina with the rigorous campaign schedule he has kept for over a year, in which he addresses thousands of people each day, oftentimes in sweltering heat. It is also well known that Trump’s lives a lifestyle that has been completely free of alcohol, cigarettes, drugs, or even coffee.

However, in recent weeks — despite the efforts both by Clinton’s campaign and by many in corporate media to dismiss discussion of Clinton’s health — the subject has become a topic of concern.

Many among those concerned have pointed to Clinton’s chronic coughing episodes, her memory loss, her previous falls, her collapse at a memorial service on the 15th anniversary of 9/11 (followed by her campaign’s denial of any health problems, then their claim that it was “overheating,” and finally their claim that it was actually pneumonia), the various footage demonstrating her apparent difficulties ascending and descending stairs, and her bizarre appearance and volume in a recent video message to voters in which she shouts at the camera: “Why aren’t I fifty points ahead?”

These incidents, in combination with her appearance during recent televised campaign events, have led some to question whether Clinton is being propped up on medications to “engineer” an appearance of alertness during widely-watched events. Following the last debate, Dilbert creator Scott Adams wrote that Clinton looked “drugged, tired [and] sick.”

“Clinton looked [to my eyes] as if she was drugged, tired, sick, or generally unhealthy, even though she was mentally alert and spoke well,” Adams wrote. “But her eyes were telling a different story. She had the look of someone whose doctors had engineered 90 minutes of alertness for her just for the event. If she continues with a light campaign schedule, you should assume my observation is valid, and she wasn’t at 100 percent.”

In August, Adams wrote a blog post on “drug testing presidential candidates.” Adams wrote:

Prescription meds change your body… often in substantial ways. When your body changes, your mind follows. The prescription meds says that very thing right on the warning label. Many of them even warn against suicidal thoughts. So if you think prescription meds don’t CAUSE thoughts, you are not current with modern science. A person on prescription meds is essentially a chemical cyborg – part human, part science experiment. This brings us to Hillary Clinton. Clinton looks unhealthy to me, and to many observers. And she has had some unexplained episodes that look like leftover brain damage from her concussion, or from a stroke, or something. See Mike Cernovich explain this one. I’m not a doctor, so my medical opinion has zero credibility. But there is certainly a legitimate question here. If voters are not confident in the brain-health of their candidates, that’s as big a problem as you can have. Don’t act like it doesn’t matter. If you do, you’re a science-denier. I also think Trump needs to get tested at the same time. He does have a lot of energy, if you know what I mean. At age 70, nearly all adults are on some sort of meds. Let’s sort it out. Their meds might not be the type that influence decisions. But I doubt it. I doubt it hard.