Malaysia's opposition leader Anwar Ibrahim shakes hands with his supporters during an election campaign in Seberang Jaya May 4, 2013. Support for Malaysian Prime Minister Najib Razak fell among all the country's main racial groups in an opinion poll, signalling the tough fight he faces in an election in the Southeast Asian country on Sunday. REUTERS/Samsul Said (MALAYSIA - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY)