Title 21, Chapter 2, Section 150
(a) Whenever any political party holds a primary to nominate
candidates for public offices to be filled in the ensuing November
election, such primary shall be held on the third Tuesday in July in
each even-numbered year or, in the case of municipalities, on the
third Tuesday in July in each odd-numbered year, except as provided
in subsection (b) of this Code section.
(b)(1) Whenever the primary occurs during the same week of the
national convention of either the political party whose candidates
received the highest number of votes or the political party whose
candidates received the next highest number of votes in the last
presidential election, the general primary shall be conducted on
the second Tuesday in July of such year. This paragraph shall not
apply unless the date of the convention of the political party is
announced by the political party prior to April 1 of the year in
which the general primary is conducted.
(2) For general primaries held in the even-numbered year
immediately following the official release of the United States
decennial census data to the states for the purpose of
redistricting of the legislatures and the United States House of
Representatives, the general primary shall be conducted on the
next-to-last Tuesday in August.