MANCHESTER, N.H. — Hillary Clinton campaigned with one of the most effective messengers her campaign has employed here Sunday night: a Gold Star father who has an uncanny ability to get under Donald Trump's skin.
Khan's son died while serving in Iraq in 2004 and his speech in Philadelphia gained significant traction after he held up a pocket constitution and challenged Trump to read it.
On Sunday, Khan said he had a few "questions" for him.
"Would my son, Captain Humayun Khan have a place in your America? Would Muslims have a place in your America? Would Latinos have a place in your America? Would African Americans have a place in your America, Donald Trump? Would anyone who isn't like you have a place in your America? Well thankfully, Mr. Trump, this isn't your America," he said.
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Slain vet Humayun Khan and his family
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Khizr Khan, whose son, Humayun S. M. Khan was one of 14 American Muslims who died serving in the U.S. Army in the 10 years after the 9/11 attacks, offers to loan his copy of the Constitution to Republican U.S. presidential nominee Donald Trump, as he speaks while a relative looks on during the last night of the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 28, 2016. REUTERS/Mike Segar
Captain Humayun Khan, died while serving his country in 2004.
(Photo credit Khizr M. Khan)
Khizr Khan walks off stage after speaking about his son US Army Captain Humayun Khan who was killed by a suicide bomber in Iraq 12 years ago, on the final night of the Democratic National Convention at the Wells Fargo Center, July 28, 2016 in Philadelphia, Pennsylvania. / AFP / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)
Khizr Khan, who's son Humayun (L) was killed serving in the U.S. Army, speaks at the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 28, 2016. REUTERS/Lucy Nicholson
Khizr Khan, father of Humayun S. M. Khan who was killed while serving in Iraq with the US Army, speaks during the fourth and final day of the Democratic National Convention at the Wells Fargo Center on July 28, 2016 in Philadelphia, Pennsylvania. / AFP / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
PHILADELPHIA, PA - JULY 28: Khizr Khan, father of deceased Muslim U.S. Soldier Humayun S. M. Khan, holds up a booklet of the US Constitution as he delivers remarks on the fourth day of the Democratic National Convention at the Wells Fargo Center, July 28, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Alex Wong/Getty Images)
Khizr Khan, whose son Humayun S. M. Khan was one of 14 US Muslims who died serving the United States in the ten years after 9/11 speaks during the final day of the 2016 Democratic National Convention on July 28, 2016, at the Wells Fargo Center in Philadelphia, Pennsylvania. / AFP / Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
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In response to each question, the crowd inside the Radisson ballroom yelled "No!"
He lauded Clinton as "the strongest, most qualified representator of the fundamental values which have made this country the symbol of hope and dignity for all through out the world."
Khan and Clinton took the stage together — to a rousing and sustained standing ovation. She sat behind him as he spoke and he did the same during her remarks.
Clinton, for her part, delivered a version of her closing argument, urging people to vote in order to reject Trump's "dark and divisive" vision.
"We have to begin listening to one another and respecting one another," she said. "This election is a moment of reckoning. It is a choice between division and unity. Between strong, steady leadership or a loose cannon, who could put everything else at risk."