Democratic presidential candidate Hillary Clinton has lost support among women and young voters against Republican nominee Donald Trump, a new poll released on the day of the first presidential debate shows. 

Clinton’s 6-point lead in a Bloomberg Politics national poll from August has eroded and Bloomberg’s latest poll, released Monday, shows her tied with Trump at 46 percent among likely voters.

There are signs that Trump’s gains came from Clinton’s diminished margins among women and young voters, Ann Selzer, the Iowa-based pollster who oversaw the survey, told Bloomberg. 

Clinton had a 13-point lead over Trump among female likely voters, 52 percent to 39 percent, down from a 26-point lead in June when she was tested against Trump and Libertarian nominee Gary Johnson. 

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The former secretary of State holds a 10-point advantage over Trump among likely voters under 35 years old, 50 percent to 40 percent. But that’s a sharp decrease from her 29-point edge among that group in August when polled against Trump, and a 26-point lead in June when polled against Trump and Johnson. 

Both candidates face a challenge in calling each other out on falsehoods in Monday’s debate. The poll found that more than seven in 10 voters rate Clinton’s as “just fair” or “poor” on truthfulness, while more than six in 10 say the same about Trump. 

“It will be hard for either candidate to criticize the other too harshly on this form of integrity,” Selzer said. “They are the pot and the kettle.”

The poll surveyed 1,002 likely voters from Sept. 21-24. The margin of error was 3.1 points for top-line numbers, and higher among subgroups.