The opposition alliance comprises Democratic Action Party (DAP), Islamic fundamentalist PAS and People's Party.
Lim Kit Siang, DAP adviser said he was encouraged by his visits to Sandakan, Kota Kinabalu, Kuching, Mas Gading and Serian in Sabah and Sarawak states that "the winds of change were blowing strong and hard".
He asked voters to "rise up to the historic challenge" of winning 33 parliamentary seats in the three ruling party, Barisan Nasional, "fixed deposit states" - Johor, Sabah and Sarawak.
He said the coalition is "one step closer" to oust the current government.
Meanwhile, the Council of Churches of Malaysia (CCM) said it is disappointed with the government's decision to hold poll on a Sunday.
"CCM wishes to register its disappointment that the 13th General Election's polling day is held on Sunday.
He asked the Election Commission to be more sensitive by giving due consideration to all religious groups when determining polling day in future.
The Barisan's current mandate ends on April 30. There are 222 seats in Parliament for mandate and control of 12 of Malaysia's 13 states.
