N.H. Rev. Stat. § 656:31
On the presidential primary election ballot of each political party, there shall be one column for the office of president. The column shall be headed "Candidate of the (insert name of party) Party for President of the United States." Underneath this heading there shall appear the words: "I hereby declare my preference for candidate for the office of President of the United States to be as follows." Below these words, there shall be printed "Vote for not more than 1" followed by the name, town or city, and state of each candidate with a square, box, oval, or other appropriate symbol directly to the right. There shall always be one blank space on the ballot below the candidates' names to allow for writing in the name of a candidate. In cities and towns where an electronic ballot counting device is used for the counting of ballots, as provided in RSA 656:40, there shall be a square, box, oval, or other appropriate symbol for directing the voters where to make the appropriate mark directly to the right of the blank space.
RSA 656:31
1979, 436:1. 1987, 284:4. 2007, 331 : 1 . 2009, 33 : 3 , eff. July 14, 2009.