Tuesday 11 February 2020 (presumably): New Hampshire Primary. Hours reportedly 6:00a-8:00p EST (1100-0100 UTC). Polls must open by 11 AM however most open between 7 AM and 8 AM. NEW HAMPSHIRE permits its 13 cities to keep their polls open until 8 PM EDT by local option- however, as there ARE only 13 cities among New Hampshire's 234 County subdivisions [the 221 "non-cities", of course, being the proverbial New England Town(ship)], the fact is that the vast majority of NH's polls have closed by 7 PM EDT and the networks have no problem considering this hour as the earliest hour of potential projection. Delegate Selection: Proportional Primary. Voter Eligibility: Modified Primary.

Primary
Source: New Hampshire Elections Division.
Status: Official. Retrieved: Sunday 29 March 2020.
Included in Nationwide vote.

All 22 of New Hampshire's delegates to the Republican National Convention are bound to presidential contenders based on the results of the voting in today's New Hampshire Primary.

• 22 National Convention delegates are to be bound proportionally to presidential contenders based on the primary vote statewide [RSA 659:93].
• A 10% threshold of the total statewide vote is required in order for a presidential contender to be allocated National Convention delegates.
• Compute the percentage of the candidate's vote in proportion to the total statewide vote. Multiply the percentage by 22 delegates and round the delegates to the nearest whole number.
• Any delegate positions that remain open are awarded to the candidate with the highest statewide vote total.

Primary
Source: New Hampshire Elections Division.
Status: Official. Retrieved: Sunday 29 March 2020.

Trump: 84.422% of 22 = 18.573. Rounds to 19 delegates. Remaining 3.
Trump having received the most votes, receives the remaining 3 delegates. Total: 22.

Prior to the primary, each Presidential candidate submits a list of delegate candidates to the New Hampshire Secretary of State. After the primary, the Secretary of State notifies each Presidential candidate indicating the number of delegates he/she has won. Each candidate has 10 days to designate which delegate candidates will become National Convention delegates [659.93].

Each presidential candidate ... shall file with the secretary of state ... the names and addresses ... of the delegates ... who shall represent the candidate as his or her delegation to the national convention. [RSA 655:50]

If a presidential candidate has received a share of the delegates as a result of the presidential primary but withdraws as a presidential candidate at any time prior to the convention, his pledged delegates shall be released by the candidate and each delegate is free to support any candidate of his political party who may be his choice as a candidate for president. [RSA 659:93 VI]

"...I pledge myself, if selected as delegate or alternate delegate to said convention, whenever I shall vote, to vote for the nomination of ________________________ as candidate for said party for president so long as he shall be a candidate before said convention." [Certificate of Delegate/Alternate Delegate Selected for the National Convention]

In addition, the 3 party leader delegates, the National Committeeman, the National Committeewoman, and the chairman of the New Hampshire's Republican Party, will attend the convention as pledged delegates by virtue of their position.

National Committeeman and Committeewoman [Bylaws of the New Hampshire Republican State Committee, Article III]

• The National Committeeman and Committeewoman shall be elected by a majority vote of the New Hampshire Republican State Committee at the Republican State Committee meeting immediately prior to the Republican National Convention.
• The National Committeeman and Committeewoman shall have the same responsibility along with the Chairman to represent New Hampshire’s interest on the National Committee and to work to preserve our first in the nation primary. During all Presidential and State Primaries the Committeeman and Committeewoman must remain strictly neutral and may not publicly or privately support, assist or endorse any one candidate over another.

Date of Presidential Primary [RSA 653:9]:

• The presidential primary election shall be held on the second Tuesday in March or on a date selected by the secretary of state which is 7 days or more immediately preceding the date on which any other state shall hold a similar election, whichever is earlier, of each year when a president of the United States is to be elected or the year previous.

On TBD, New Hampshire Secretary of State Bill Gardner set the state's Presidential Primary for TBD.