A series of writs for the election of the 4th General Assembly of Nova Scotia were issued February 2–19, 1765, returnable by March 13, 1765. The assembly convened on May 28, 1765, held eight sessions, and was dissolved on April 2, 1770.
During the assembly, Sunbury County was created with 2 seats and Londonderry, Sackville, Yarmouth, and Barrington Townships were created with 1 seat each, for a total of 33 seats.
(Cape) Breton County was also created, and 2 members were elected, but the seats were held not to exist due to insufficient freeholders.
Francis White -initial by-election March 24, 1766, took seat July 1, 1767, seat declared vacant November 8, 1769.
(Cape) Breton County
initial by-election, writ issued December 16, 1765, returned March 21, 1766. Election declared invalid June 14, 1766 due to insufficient freeholders, and these two members were never seated.
David Archibald -by-election, writ issued February 19, 1766, returned May 24, 1766, took seat June 5, 1766.
Yarmouth Township
Malachy Salter -initial by-election, took seat October 24, 1766; did not attend after 1768.
Note: Unless otherwise noted, members were elected at the general election, and took their seats at the convening of the assembly.
By-elections are special elections held to fill specific vacancies. When a member is noted as having taking their seat on a certain date, but a by-election isn't noted, the member was elected at the general election but arrived late.