At their final rally, candidates from the People's Conscience Party (Hanura) took a vow to not be greedy, but to serve the people of Indonesia and fight corruption if elected.
Led by party founder Wiranto, 67, a former commander of the Indonesian Armed Forces, they urged a 25,000-strong crowd at Gelora Bung Karno stadium yesterday to choose clean, competent leaders.
"A victory for Hanura will be a victory for conscience," said the party's presidential candidate.
Although Hanura is the smallest party in the outgoing Parliament, recent polls show that it is expected to hold its own and get a larger share of the votes in its second election on Wednesday.
The party had a new lease of life when media mogul Hary Tanoesoedibjo, who is Chinese and Christian, joined the party in February last year. He is its vice-presidential candidate.
Formed by Mr Wiranto in 2006, Hanura has 17 out of 560 seats in the national Parliament and is expected to get 6.7 per cent of the vote, according to a survey by the Centre for Strategic and International Studies. This could put it in fourth place after the leader, the Indonesian Democratic Party - Struggle, and Gerindra and Golkar.
Observers attribute the expected rise in Hanura's numbers to an advertising blitz on television, billboards and buses.