On 27 March 2024, State Chairman of
Barisan Nasional (BN) and
United Malays National Organisation (UMNO) of Sabah
Bung Moktar Radin dismissed the possibility of Sabah BN to work with
Gabungan Rakyat Sabah (GRS) coalition led by Chief Minister
Hajiji Noor. Hajiji meanwhile, said that GRS is open to collaboration from other parties, but insists that the preference is working together with
Pakatan Harapan (PH), who joined the Sabah government after BN withdrawal during the
2023 Sabah political crisis.
Parti Warisan Sabah (WARISAN) also were interested in cooperating with GRS for the elections, but according to its president
Shafie Apdal, its invitation to discuss such collaborations were turned down by GRS several times. Meanwhile,
Perikatan Nasional (PN) have announced its intention to contest all 73 state seats in its first foray into the state, the move which led to
Sabah Progressive Party's (SAPP) exit from PN, as announced by party leader
Yong Teck Lee in December 2024, as SAPP insists that only party which has origins in Sabah are allowed to contest the election. SAPP will contest the election under GRS, the local coalition which it is a component in parallel with PN since 2020. This is the first time PN contesting the election under its own banner, although its component party
Sabah BERSATU have contested and won seats before, under PH (PKR) and GRS in the 2018 and 2020 state elections respectively. PAS and GERAKAN also have contested in Sabah before, with GERAKAN having won seats under BN banner. On 15 December 2024,
Social Democratic Harmony Party (KDM), through its President
Peter Anthony also confirmed that the party would contest the election as a party, without being in a coalition and working together with other parties, targeting 43 state seats. Anthony, who is also the
Melalap MLA however, announced that he would not contest the election and defend the Melalap state seat in the election, in view of the pending appeal to his court case. After Peter loses his final appeal on 4 March 2025 and sentenced to jail immediately, the party moved on 7 March 2025 to appoint his daughter Priscella Peter as the acting President. On 15 January 2025, PN, through its Deputy Chairman
Hamzah Zainudin launched the slogan 'Kasi Bagus Sabah' (Make Sabah Great Again in
English) as part of its preparations for contesting the election. On 16 January 2025, the
Malaysian Chinese Association (MCA), through its President
Wee Ka Siong, confirmed that the party would contest in the election. On 2 October 2025, the
Homeland Solidarity Party (STAR) and
Sabah Progressive Party (SAPP) has left the ruling
Gabungan Rakyat Sabah (GRS) coalition. However 5 of STAR MLA decided to stay with GRS for the election, and were expelled from STAR. On 6 October 2025, Chief Minister Hajiji Noor officially announced the dissolution of the 16th
Sabah State Legislative Assembly.
United Progressive Kinabalu Organisation (UPKO) announced on 10 November 2025 that it has exited the PH coalition and will contest under its own banner, a day after its leader,
Ewon Benedick resigned as federal cabinet minister. == Campaign slogans ==