In the presidential election of November 2, 2004, the village had 26 registered voters, roughly half of whom were registered Republican; the other half were registered "undeclared", i.e., unaffiliated with a party. New Hampshire law, though, allows a voter to declare or change a party affiliation upon arriving at the polling place, so a number of independent voters vote in the Democratic party primary.
The votes are counted immediately after all are received; the Dixville Notch results of the primary (and now the Hart's Location ones as well) often lead morning news programs on election day. During every election year since 1968, the candidate with the plurality of Dixville Notch's voters has been the eventual Republican nominee for president. On the Democratic side, however, the village's election results have less often predicted the nominee. In 2000, for example, Bill Bradley won the most votes among Dixville Notch's Democratic primary voters although Al Gore was the party's eventual nominee.
In 1992, the Libertarian Party unsuccessfully attempted to capitalize upon Andre Marrou's unexpectedly strong showing in Dixville Notch in the general election. In 2004, Democratic candidate Wesley Clark was the only contender to personally visit Dixville Notch; he was on hand when the votes were cast and counted, and he received the majority of Democratic votes cast. (Clark placed third and received only 13 percent of votes statewide.)
The community's voting tradition received a nod in the 2002 third season episode of US television program The West Wing, in an episode entitled "Hartsfield's Landing", named after a town clearly modeled on either Dixville Notch, or its companion, Hart's Location.
In 2008, Senator Barack Obama became the first Democrat to win the community's vote in a presidential election since 1968, by a margin of 15 to 6.