The 2020 United States presidential election in New Hampshire was held on Tuesday, November 3, 2020, as part of the 2020 United States presidential election in which all 50 states and the District of Columbia participated. New Hampshire voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican Party's nominees, incumbent President Donald Trump and Vice President Mike Pence, against the Democratic Party's nominees, former Vice President Joe Biden and his running mate, Senator Kamala Harris. New Hampshire has four electoral votes in the Electoral College.

The 2020 United States Senate election in New Hampshire was held on November 3, 2020, to elect a member of the United States Senate to represent the State of New Hampshire, concurrently with the 2020 U.S. presidential election, as well as other elections to the United States Senate, elections to the United States House of Representatives and various state and local elections. Incumbent Democratic Senator Jeanne Shaheen won reelection to a third term after comfortably defeating Republican nominee Bryant Messner by 15.6 points and sweeping every single county in the state. This marked the first Senate election since 1972 in which the Democrat carried Belknap County.