| Election Name: | 1956 New Hampshire Democratic presidential primary |
| Country: | New Hampshire |
| Flag Year: | 1931 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1952 New Hampshire Democratic presidential primary |
| Previous Year: | 1952 |
| Next Election: | 1960 New Hampshire Democratic presidential primary |
| Next Year: | 1960 |
| Candidate1: | Estes Kefauver |
| Colour1: | ffd12b |
| Home State1: | Tennessee |
| Popular Vote1: | 21,701 |
| Percentage1: | 84.6% |
| Candidate2: | Adlai Stevenson II |
| Colour2: | 1E90FF |
| Home State2: | Illinois |
| Popular Vote2: | 3,806 |
| Percentage2: | 14.8% |
See main article: 1956 Democratic Party presidential primaries.
The 1956 New Hampshire Democratic presidential primary was held on March 13, 1956, in New Hampshire as one of the Democratic Party's statewide nomination contests ahead of the 1956 United States presidential election.
Estes Kefauver, a senator from Tennessee and the previous winner of the 1952 New Hampshire primary against incumbent President Truman,[1] defeated eventual 1956 Democratic nominee Adlai Stevenson by nearly 70 percentage points.[2] Kefauver would go on to be Stevenson's running mate in the 1956 election, but the Stevenson-Kefauver ticket lost in a landslide to incumbent Republican President Eisenhower.[3]
| Estes Kefauver | 21,701 | 84.6% | |
| Adlai Stevenson II | 3,806 | 14.8% | |
| Other write-ins | 139 | 0.6% |