The tight rematch race between Rep. Sean Patrick Maloney and Republican challenger Nan Hayworth entered its final weekend with Maloney leading by 5 percentage points in a new poll and a tide of outside money helping both candidates blanket the airwaves with commercials and produce a daily stream of mailings.Maloney, a Cold Spring Democrat who unseated Hayworth two years ago, led his predecessor by 49 percent to 44 percent in a survey of likely voters in the 18th Congressional District, [...]