On September 26, New Hampshire held a special election to fill a vacancy in the State House, Rockingham 4 district. The results: Democratic 49.9%; Republican 47.8%; Libertarian 2.3%.

In November 2016, this district had elected five representatives. There were only Republicans and Democrats running in November 2016. The average Republican nominee got 64.1% and the average Democrat got 35.9%. Republicans had won all five seats. Thanks to Bob Johnston for this news.

New Hampshire holds another special legislative election with all three parties on October 24, in the Strafford 13 district.