John Langdon Democratic-Republican William Plumer Democratic-Republican The 1812 New Hampshire gubernatorial election was held on March 10, 1812.

[1] Incumbent Governor John Langdon did not run for re-election.

[2] Democratic-Republican candidate William Plumer defeated Federalist candidate and Former Governor of New Hampshire John Taylor Gilman.

Since no candidate received a majority in the popular vote, Plumer was elected by the New Hampshire General Court per the state constitution.

As no candidate received a majority of the vote, the New Hampshire General Court was required to decide the election, both Houses in convention choosing among the top two vote-getters, Gilman and Plumer.