New Hampshire's 20th State Senate district
New Hampshire's 20th State Senate district is one of 24 districts in the New Hampshire Senate. It has been represented by Democrat Lou D'Allesandro since 1998; D'Allesandro is currently the longest-serving member of the body. Geography. The district is based in Manchester, including the city's 3rd, 4th, 10th, and 11th wards as well as the nearby town of Goffstown, in Hillsborough County. The district is located entirely within New Hampshire's 1st congressional district.