No idea where you got that from. The breakdown in percentages is 38/24/38 for upstate/suburbs/NYC. Look at question 27, asking if they support enacting the toughest gun laws in the nation, including limiting magazines to 7 bullets. Support upstate is 60%, support from Republicans is 58% and conservatives 58% as well. You guys are what we call a vocal minority, because while you may get some good sound bites and make a good showing at a rally, the general public disagrees with you.
And yes, Siena polls are generally pretty accurate. I’ve used them a number of times on various issues.
http://www.siena.edu/uploadedfiles/home/sri/SNY0113%20Crosstabs.pdf