On 28 September 2015 Prime Minister Dean Barrow announced that he had advised the Governor-General to dissolve the National Assembly and to fix Wednesday 4 November 2015 as the date for the next general elections.

In March 2015 UDP leader and Prime Minister Dean Barrow ruled out the possibility of a snap election later in 2015 despite his party's recent interim electoral successes.

Both Barrow and the opposition People's United Party support lowering the maximum term of the National Assembly to four years.

Gains in the Toledo, Stann Creek and Orange Walk Districts more than made up for the PUP's net loss in Belize City in 2012.

[10] Based on a previously scheduled purge of electoral lists by the Belize Elections and Boundaries Commission, Opposition Leader Francis Fonseca has requested international observation of the election from the Caribbean Community, the Organization of American States or the Commonwealth of Nations.

In October 2015 the opposition Vision Inspired by the People party filed suit seeking to nullify the election results based on this lack of a recent reapportionment.

In September 2015, shortly after the election was called, the PNP merged with members of the VIP and other opposition groups to form the Belize Progressive Party (BPP).

The Cayo North constituency held a by-election on 5 January 2015 to elect a successor to PUP Area Rep. Joseph Mahmud, who unexpectedly resigned in November 2014.

[21][22] On 8 June 2015 PUP Area Rep. Ivan Ramos resigned after controversially failing to retain his standard bearer status in Dangriga.

[26] A fourth candidate endorsed by both of Belize's other active minor parties, the PNP and VIP, was disqualified due to holding dual citizenship.