The party of Indonesian President Susilo Bambang Yudhoyono won a resounding victory in parliamentary polls, handing him a stronger mandate to push a reformist agenda in the world's third-largest democracy.

Unofficial counts from five polling agencies showed April 10 that Yudhoyono's Democratic Party would be the largest in the 560-seat lower house after collecting 20 percent of the popular vote. It ranked fifth in the last election in 2004.

Preliminary, official results are not expected for days. Yudhoyono will have to form a coalition to garner enough seats to contest July 8 presidential polls and build a parliamentary majority that can push through his policies.