It's a single poll with a small sample size, but this result from a poll taken of New York City voters by Marist is at least worth noting:
On the eve of the ninth anniversary of the September 11th attacks, the debate over the construction of an Islamic community center and prayer space near Ground Zero continues. What do voters think about the planned development? 51% of registered voters in New York City oppose building the center two blocks from where the attacks occurred. 41%, on the other hand, are in favor of it. 8% are unsure.
Although the proportion of voters who are against the center has changed little since Marist last asked this question in August, more voters favor the construction of the prayer space. In Marist's previous survey, 53% opposed erecting the center while 34% supported it. 13% were unsure.
Interestingly, the poll has results for Protestants, Catholics, and Jews but not Muslims.
UPDATE: Political consultant Rick Wilson e-mails in to say that it's generally difficult, even in New York City, to find a large enough sample of Muslim respondents to use for a poll of this kind.