Hillsborough County may be broken down into five areas:
- the city of Manchester
- the city of Nashua
- Manchester's “collar towns”: Bedford, Goffstown, Merrimack, and Litchfield
- towns bordering Massachusetts: Hollis, Hudson, Pelham, and Brookline
- the towns of western Hillsborough County
In 1960, Richard Nixon won New Hampshire with 53 percent of the vote, but only carried 42 percent of the vote in Hillsborough County, losing to John Kennedy by almost 14,000 votes. Nixon's percentage of the vote in the five parts of Hillsborough County (listed above) appears in the graph below.
Kennedy's victory in Hillsborough depended heavily on his performance in the cities of Manchester and Nashua, where he carried roughly two of three votes.
Nixon did about as well in Manchester's collar towns as he did statewide, and exceeded his statewide performance by roughly 15 percent in the traditionally Republican towns of western Hillsborough.