“Neither Teaneck nor Riverdale are majority Orthodox Jewish.”
I haven’t seen election-district by election-district level results from Teaneck, but Obama did best in the parts of Riverdale where there is the greatest concentration of Orthodox Jews and worst in the parts of Riverdale where non-Jews (mostly Irish-Americans) dominate. (Romney would actually defeat Obama in Irish-American and Italian-American areas of the Bronx even though Obama got 91% of the vote in the Bronx overall.