There were two gubernatorial elections held in New Hampshire in 1878:
The 2006 New Hampshire gubernatorial election took place on November 7, 2006. Incumbent Democrat John Lynch defeated Republican James B. Coburn and won a second term as Governor of New Hampshire.
The 2004 New Hampshire gubernatorial election occurred on November 2, 2004, concurrent with that year's presidential election. Democrat John Lynch, a multimillionaire businessman from Hopkinton, narrowly defeated incumbent Republican Governor Craig Benson of Rye, winning a two-year term. Benson was the first New Hampshire governor in 78 years to lose reelection after one term. Lynch was sworn in on January 6, 2005.
The 2008 New Hampshire gubernatorial election, took place on November 4, 2008. Incumbent governor John Lynch won his third term with a landslide victory over Republican opponent Joseph Kenney.
The 2010 New Hampshire gubernatorial election was held on November 2, 2010. Incumbent Democratic Governor John Lynch was re-elected to his fourth term and final term.
The 2002 New Hampshire gubernatorial election was held on November 5, 2002. Three-term incumbent Democratic Governor Jeanne Shaheen opted to unsuccessfully run for the United States Senate rather than seek a fourth term as governor. Republican Craig Benson, a self-funded businessman, defeated Democrat Mark Fernald, a state senator, in the general election after both won contested primary elections.
The 2014 New Hampshire gubernatorial election was held on November 4, 2014, to elect the Governor of New Hampshire, concurrently with the election to New Hampshire's Class II U.S. Senate seat, as well as other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections.
The 1992 New Hampshire gubernatorial election took place on November 3, 1992. Republican nominee Steve Merrill won the election.
The 2016 New Hampshire gubernatorial election took place on November 8, 2016, to elect the Governor of New Hampshire, concurrently with the 2016 U.S. presidential election, as well as elections to the United States Senate, elections to the United States House of Representatives and various state and local elections.
The 2020 New Hampshire gubernatorial election was held on November 3, 2020, to elect the Governor of New Hampshire. Incumbent Republican Governor Chris Sununu was re-elected to a third two-year term in office, defeating his opponent Feltes in a landslide. Sununu's win marked the first time since 1986 that a Republican was elected to a third term as Governor, in which his father, John H. Sununu was reelected for his third and final term. The elder Sununu chose not to seek reelection in 1988, instead becoming George H.W. Bush's chief of staff in 1989.
The 2022 New Hampshire gubernatorial election will take place on November 8, 2022, to elect the Governor of New Hampshire. As New Hampshire does not have gubernatorial term limits, incumbent Republican Governor Chris Sununu is eligible to run for re-election to a fourth 2-year term in office.
The 1800 New Hampshire gubernatorial election took place on March 11, 1800. Incumbent Federalist Governor John Taylor Gilman won re-election to a seventh term, defeating Democratic-Republican candidate Timothy Walker.
The 1801 New Hampshire gubernatorial election took place on March 10, 1801. Incumbent Federalist Governor John Taylor Gilman won re-election to a eighth term, defeating Democratic-Republican candidate Timothy Walker in a re-match of the previous year's election.
The November 1878 New Hampshire gubernatorial election was held on November 5, 1878. Republican nominee Nathaniel Head defeated Democratic nominee Frank A. McKean with 50.26% of the vote.
The March 1878 New Hampshire gubernatorial election was held on March 12, 1878. Republican nominee Benjamin F. Prescott defeated Democratic nominee Frank A. McKean with 50.60% of the vote.
The 1802 New Hampshire gubernatorial election took place on March 9, 1802. Incumbent Federalist Governor John Taylor Gilman won re-election to a ninth term, defeating Democratic-Republican candidate, former Governor and U.S. Senator John Langdon.
The 1803 New Hampshire gubernatorial election took place on March 8, 1803. Incumbent Federalist Governor John Taylor Gilman won re-election to a tenth term, defeating Democratic-Republican candidate, former Governor and U.S. Senator John Langdon in a re-match of the previous year's election.
The 1804 New Hampshire gubernatorial election took place on March 13, 1804. Incumbent Federalist Governor John Taylor Gilman won re-election to a eleventh term, defeating Democratic-Republican candidate, former Governor and U.S. Senator John Langdon in a re-match of the previous year's election.
The 1805 New Hampshire gubernatorial election took place on March 12, 1805. Incumbent Federalist Governor John Taylor Gilman was defeated for re-election by Democratic-Republican candidate, former Governor and U.S. Senator John Langdon in a re-match of the previous year's election.