Tuesday 3 March 2020 (presumably): Tennessee Primary. Hours 7:00a-8:00p EST / 8:00a-7:00p CST (1400-0100 UTC). The polls close at the same GMT/UTC time, that is, polls close at a particular local time in the advanced time zone and close one hour earlier local time in the lagging time zone. Poll opening times are set by county. In some counties, polls open at 9a in the prevailing time zone. Delegate Selection: Winner-Take-Most Primary. Voter Eligibility: Open Primary.

Primary
Source: Tennessee Secretary of State.
Status: Official. Retrieved: Wednesday 8 April 2020.
Included in Nationwide vote.

All 58 of Tennessee's delegates to the Republican National Convention are pledged to presidential contenders in today's Tennessee Presidential Primary.

27 district delegates, 3 from each of the 9 congressional districts, are to be allocated to the presidential contenders based on the primary results in each congressional district [ByLaws of the Tennessee Republican Party. Article IX. Rule C. Section 1. and Section 4A.]. The district delegates are directly elected and appear on the primary ballot.

• If one candidate receives more than 2/3 of the vote or only 1 candidate receives 20% or more of the vote in a congressional district, that candidate receives all 3 delegates.
• Otherwise, if 2 or more candidates receive more than 20% of the vote, the highest vote getter receives 2 delegates and the next highest vote getter receives 1 delegate.
• Otherwise, the top 3 vote getters each receive 1 delegate.

31 (10 at-large, 18 bonus, 3 RNC) delegates are bound to presidential contenders based on the primary results statewide [Article IX. Rule C. Section 1. and Section 4B.]. About half of the at-large delegates are directly elected and appear on the primary ballot.

• If one candidate receives more than 2/3 of the vote or only 1 candidate receives 20% or more of the vote statewide, that candidate receives all 31 delegates.
• Otherwise, if 2 or more candidates receive more than 20% of the vote, the delegates are distributed proportionally to those candidates receiving more than 20% of the statewide vote. (Here, the "total qualified vote" is the total number of votes cast to those candidates receiving more than 20% of the statewide vote.)
• Otherwise, delegates are distributed proportionally. (The "total qualified vote" = total statewide vote.)

Proportional distribution and rounding: Beginning with the candidate who received the most votes, multiply [the percentage of votes received] by [31 National Convention Delegates] and divide by [total qualified vote]. Round any remainder up to the next whole number. Repeat for the next highest vote getter until all 31 delegates are allocated.

Primary (preliminary)
98% Reporting. Estimate as of 7 April 2020 01:26 EDT.

Statewide: Winner-take-all for Trump.

At the National Convention, delegates are bound for at least 2 ballots. TCA §2-13-307(b) and 2-13-308.

The 28 (10 at-large, 18 bonus) At-Large delegates are bound to Presidential candidates based on the results of the primary. Half are elected in the primary and half are appointed by the Executive Committee with the consent of the respective Presidential campaigns. When determining "half" divide the total number of At-Large plus bonus delegates by 2. If there are fractional delegates, round up the number of delegates appointed by the Executive Committee and round down the number of delegates determined by the Primary. [Article IX. Rule C. Section 2.]

• 28 At-Large delegates ÷ 2 = 14.
• 14 are elected in the Primary and 14 are appointed by the Executive Committee.

3 party leaders, the National Committeeman, the National Committeewoman, and the chairman of the Tennessee's Republican Party, will attend the convention as pledged delegates by virtue of their position.

Saturday 4 April 2020 (presumably): State Executive Committee meets.

The State Executive Committee elects the 14 remaining at-large delegates.