2019年，马来西亚希望联盟政府“乱中求治”，步履蹒跚推动政治改革，但由于竞选承诺难以兑现、族群政治阴影犹在、政策反复令出难行，在其执政周年“改革光环”逐渐褪色，社会不满情绪上升，补选连败导致政府支持率下降。最终，希望联盟在内部路线分歧、派系争斗、选民基础不同等问题中分裂和瓦解。第八任总理穆希丁领导的国民联盟依然面对朝野争斗、派系林立、党内竞争，以及联盟内竞争与合作中的利益纠葛和东马地区主义等挑战。
In 2019，Malaysia Pakatan Harapan （Alliance of Hope）government tried to “find a cure through chaos” and staggered to push for political reformation. The halo of reformation had lost its shine on the anniversary of its administration with social discontent on the rise. By-election defeats reflected a decline in support，as campaign promises are difficult to keep，ethnic political figures remained and policies were repeatedly made difficult to implement. In a post-authoritarian Malaysia，the new ruling coalition has split and collapsed amid coalition’s internal route divisions，factional strife，and differences in voter base within Pakatan Harapan. Perikatan Nasional （National Alliance），a new coalition of political parties under the leadership of the 8th Prime Minister Tan Sri Muhyiddin Yassin，continues to face such challenges as inter-party conflict，factionalism，intra-party rivalry，as well as entanglement of interests in competition and cooperation within the Alliance and regionalism in East Malaysia.
