All the voters should reject the unethical and unprincipled political frogs.
Former prime minister Dr Mahathir Mohamad said, PKR candidate Zaid Ibrahim could be likened to a frog.
"When he was in Umno, he became a minister, then he joined the opposition and now he's their candidate for the by-election.
"We should not choose and trust people who like to hop from one party to another like that.
"He (Zaid) doesn't gamble but he has horse races. I too have horses but they are not horse races. He admitted having horse races but said he didn't gamble. I don't understand this," Mahathir said.
He urged voters in Hulu Selangor, who will go to the polls this Sunday, to vote for the BN candidate.
He said BN had proven its capability to bring development and change to the area towards improving the people's living standard.
Mahathir said the country had progressed from the BN's administration and because its leaders worked hard for the country's development and not for personal interests.