[3] This was the fifth national and the second parliamentary by-election to be called since the historic 2018 general election, which saw the first-ever change of federal government in Malaysia's history.

[12] Vote-tallying process and results announcement of the by-election were also broadcast live to the public for a historic first time on Election Commission (EC)’s social media platforms such as Facebook and Instagram.

[16][17] Pakatan Harapan (PH) had on 4 January picked and announced DAP's M. Manogaran as the candidate for the Cameron Highlands by-election.

Former BN component Parti Gerakan Rakyat Malaysia (Gerakan) on 11 January announced that it has decided to sit out the Cameron Highlands parliamentary by-election after earlier rumours that the party might field its Cameron Highlands deputy division chairperson Dr Eddie Edward Tharmaraj as the candidate in the by-election.

[22] A voter Syazleen Anisa Misria who is a bride-to-be got panic realising that the school hall she had booked six months ago for her wedding was to be used as a voting centre on the same day when the by-election was announced.

Her post was quickly met with an immediate attention and reply by the admin of the EC Facebook page who request her contact details to discuss the matter further.

[25] The High Court on 10 January dismisses Sivarraajh's bid to challenge EC decision over the five-year election ban.

[27] Orang Asli Senator Bob Manolan Mohamad of People's Justice Party (PKR) clarified that his appeal to the Orang Asli village headmen (Tok Batin) in a dialogue between them earlier, to put aside political differences and work together with the Federal Government to better their villages in Cameron Highlands have been mistaken as "threats" allegedly made to them if they did not support PH they will not get paid and will be sacked.

[30] Celebrity chef, Dato' Redzuawan Ismail or popularly known as Chef Wan, the son of a Federal Land Development Authority (Felda) settler, said he wants to slap former prime minister Najib Razak and ex-Felda chairman Mohd Isa Abdul Samad for mismanaging the agency into a financial mess while on a cooking programme and campaign trail for Felda settlers in Cameron Highlands on 20 January 2019.

[33] N01 Tanah Rata N02 Jelai Post and Early votes "His Majesty's Government Gazette - Notice of Contested Election, Parliament for the State of Pahang [P.U.