Donald Trump, the GOP presidential hopeful, is not attracting the support of many Long Island residents, according to a poll from News 12 and Hofstra University.

In a Sept. 29 telephone poll, about 63 percent of 442 adults asked whether the New York businessman was fit to lead the country said no. The results showed 29 percent of respondents replied yes, and 8 percent said they were undecided.

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Of those surveyed, about a quarter identified themselves as Republicans, another quarter said they were Democrats and the rest said they were either independent or unaffiliated. The respondents were evenly split between Nassau and Suffolk counties, and the poll had a margin of error of +/- 5 percent.

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"Donald Trump is a niche candidate who has very strong and reliable support that doesn't go much farther than his base," said Lawrence Levy, executive dean of the National Center for Suburban Studies at Hofstra University and a former Newsday columnist. "He has the money to hang around as long as he likes, but he has yet to show an ability to go beyond people who have responded to his message and positions."

After a surge in support over the summer, Trump led polls nationally by as much as 16 points in some early September, according to Real Clear Politics, which aggregates political data.

The latest numbers show the gap between Trump and his competitors tightening, however. Trump has slipped 7 points since his peak on Sept. 19, according to RCP's average of nine polls, and he currently sits at 6 points above the next top candidate, former neurosurgeon Ben Carson.