The Indonesian Democratic Party of Struggle (PDI-P), the largest opposition, won most votes at last month's legislative elections, as negotiations to build coalitions heat up ahead of July's presidential polls.

It won 18.95 percent of the vote, the election commission announced on May 10, in line with unofficial tallies released at the time of the April 9 vote.

The Democratic Party led by President Susilo Bambang, meanwhile, saw its support halve to around 10 percent.

Under Indonesia’s election law, a party or coalition of parties needs 25 percent of the national vote or 20 percent of seats in the lower house of parliament to field a presidential candidate.

The result means that the PDI-P will likely have to form a larger-than-expected coalition to ensure enough support at the July election.

VNA