According to Mr.Najib, the Chinese must vote for BN component parties, meaning the MCA, or lose representation in Government. The MCA has said the same thing recently.
This is the BN's idea of endearing itself to the voter; by threatening them.
There is a better way to ensure representation for all communities in the government, and that is for the voters to reject the BN and vote en masse for Pakatan Rakyat. It is far better than giving in to political thuggery and extortion.
Interestingly, for all it's big talk, the MCA did not pull it's existing Ministers out of the Cabinet even though it had been roundly rejected in the 2008 General Elections.