A pollster tested Trump's support in a key state before, during, and after the tape scandal -- and the results were brutal

Donald Trump saw his support evaporate in Wisconsin just days after a 2005 audio tape of him bragging about groping women was leaked.

A Marquette University poll plotted the rapid decline of Trump's poll numbers in the state before, during and after the tape was released.

On Thursday Trump led Clinton in the polls at 41% while Clinton garnered 40%.

But the tide began to turn following the controversy on Friday and Clinton's poll numbers rose to 44% while Trump's fell to 38%.

During the weekend, Clinton obtained a commanding lead over the the GOP nominee as her support climbed to 49% and Trump's fell to 30%.

Over the course of about four days, Trump suffered a devastating 11-point decline in favorability among likely voters.

Throughout the summer, the race between the two presidential candidates in the state has been tight with the two consistently edging each other out in the polls.

In August, the former secretary of state's lead over Trump shrunk after being up by 13 points earlier in the month.

Ted Cruz won the state in the GOP primary, beating Trump by 13 points, according to CNN exit polls taken at the time.

The real-estate magnate's presidential campaign has been in a tailspin over the last few weeks — and that was compounded by a disappointing performance at the second presidential debate on Sunday.

After a parade of Republicans withdrew their support from Trump and condemned his inappropriate comments from the 2005 audio recording, the GOP nominee lashed out and said the loss of their endorsements had liberated him to continue his campaign on his own terms.

"It is so nice that the shackles have been taken off me and I can now fight for America the way I want to," he said on Twitter.

RELATED: Women who have accused Donald Trump of inappropriate sexual behavior

Women who have accused Donald Trump of inappropriate sexual behavior
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Women who have accused Donald Trump of inappropriate sexual behavior
- JULY 23: Ninni Laaksonen Miss Finland attends Miss Universe Post Pageant VIP Party hosted by Chuck Nabit, Dave Geller, Ed St. John, Greg Barnhill, Freddie Wyatt, Rob Striker at The Standard Downtown on July 23, 2006. (Photo by Patrick McMullan/Patrick McMullan via Getty Images)
Karena Virginia, along with attorney Gloria Allred, speaks at a news conference October 20, 2016 in New York. Virginia, a yoga teacher and life coach from New York, came forward for the first time on October 20, 2016 to accuse Republican presidential nominee Donald Trump of engaging in inappropriate sexual conduct which occured in 1998. / AFP / DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)
Summer Zervos, a former contestant on the TV show The Apprentice, reacts next to lawyer Gloria Allred (L) while speaking about allegations of sexual misconduct against Donald Trump during a news conference in Los Angeles, California, U.S. October 14, 2016. REUTERS/Kevork Djansezian
EXCLUSIVE: Woman says Trump reached under her skirt and groped her in early 1990s - The Washington Post https://t.co/aUMLUvDi2z

Donald Trump's ex-wife Ivana Trump

(Photo via REUTERS/Leonhard Foeger)

Jill Harth

(Photo by Larry Busacca/Getty Images for New York Weddings)

Temple Taggart McDowell

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Natasha Stoynoff

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Miss Washington USA 2013, Cassandra Searles

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Actress Tasha Dixon

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Jessica Drake speaks to reporters about allegations of sexual misconduct against Donald Trump, alongside lawyer Gloria Allred (L) during a news conference in Los Angeles, California, U.S. October 22, 2016. REUTERS/Kevork Djansezian
MELBOURNE, AUSTRALIA - OCTOBER 29: Jennifer Hawkins poses at the Myer Marquee on Derby Day at Flemington Racecourse on October 29, 2016 in Melbourne, Australia. (Photo by Ryan Pierse/Getty Images for the VRC)

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