KUALA LUMPUR: Gerakan must serve the rakyat well or risk being replaced by other Barisan Nasional component parties or direct candidates in the next general election.In issuing the warning, Gerakan president Datuk Seri Mah Siew Keong (pix) said the emergence of BN direct candidates in the previous Sarawak state election served as a reminder that underachievers would be facing challenges, even within BN, to defend their seats."In principle, we do…