NEW YORK, NY - SEPTEMBER 03:  GOP presidential front-runner Donald Trump exits a news conference in Manhattan after he signed a pledge Thursday to support the Republican nominee in the 2016 general election, ruling out a third-party or independent run on September 3, 2015 in New York City. Trump made the announcement following a meeting with  Republican National Committee chairman Reince Priebus. Trump stressed repeatedly in the news conference that he is leading in all national polls.  (Photo by Spencer Platt/Getty Images)
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NEW YORK, NY - SEPTEMBER 03: GOP presidential front-runner Donald Trump exits a news conference in Manhattan after he signed a pledge Thursday to support the Republican nominee in the 2016 general election, ruling out a third-party or independent run on September 3, 2015 in New York City. Trump made the announcement following a meeting with Republican National Committee chairman Reince Priebus. Trump stressed repeatedly in the news conference that he is leading in all national polls. (Photo by Spencer Platt/Getty Images)
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Story highlights

Donald Trump found himself the target of audible boos on Tuesday

The reaction came as Trump, a New York native, walked alongside his wife, Melania, by media near the entrance

(CNN) —  

Donald Trump found himself the target of audible boos on Tuesday as he entered the U.S. Open quarterfinals in New York on Tuesday evening.

The GOP presidential front-runner, on hand to watch defending U.S. Open champion and top-ranked Serena Williams defeat her older sister, Venus, was booed as he entered the stadium, according to a video posted by ESPN.

The reaction came as Trump, a New York native, walked alongside his wife, Melania, by media near the stadium entrance.

Celebrity Alan Cumming apparently enjoyed the occasion, tweeting, “So much fun joining in the mass collective boo at Donald Trump here at the U.S. Open!!”

Trump is leading nearly every Republican poll both nationally and in early voting states. He is scheduled to leave New York tomorrow to appear at a rally in Washington with Ted Cruz to protest the Iranian nuclear deal.