Lim Guan Eng has admitted that there is unhappiness among the DAP grassroots about campaigning for a Bersatu candidate in the Tanjung Piai by-election but said that all Pakatan Harapan component parties have to "work together to win together".

"We don't deny that there is unhappiness but I think we all stress that there is a need to work together to win together," said Lim, the party's secretary-general.

"Remember that any loss for Pakatan Harapan is also a loss for each individual party, so it is important that we have to work towards our objective," he told a press conference at the Selangor DAP convention held in Petaling Jaya today.