Sen. John McCain is poised for a landslide victory in New York's Republican presidential primary, based on a Reuters/C-SPAN/Zogby poll released Monday. McCain, R-Ariz., widened his lead over former Gov. Mitt Romney, R-Mass., by eight percentage points in a single day. McCain drew 53 percent support in the latest poll, compared to 19 percent for Romney, a gap of 34 points. McCain had led 49 to 23 percent in Sunday's tracking poll, a margin of 26 points. New York's Republican primary will be held on Tuesday. The third major candidate, former Gov. Mike Huckabee, R-Ark., received 8 percent support both...