The campaign team for one of Indonesia's presidential contenders has called on former US President Bill Clinton to not visit the country while vote counting is underway.

Mr Clinton is due to visit Indonesia as part of a tour of the region at a time when there is a fiercely contested race between Joko Widodo and Prabowo Subianto.

Both have declared victory based on unofficial polling. The official results will be announced on July 22.

Prabowo Subianto's brother and spokesman Hashim Djokohadikusumo says Mr Clinton's visit is sponsored by a tycoon with links to the rival candidate and they may set up a meeting.

"We'd like President Clinton to not get involved in our domestic political affairs," he said.

"I don't know whether this visit was planned a long time ago to coincide with the elections, but we're concerned that the trip may be used for other purposes."

Mr Clinton this week starts a tour of the Asia-Pacific region to highlight social work undertaken by the Clinton Foundation.

Good relationship with Australia

Meanwhile, Mr Djokohadikusumo says Mr Subianto has already established a good relationship with the Australian government.

He says Mr Subianto has exchanged letters with Australia's Prime Minister Tony Abbott, met Foreign Affairs Minister Julie Bishop and had lunch with Jakarta-based Ambassador Greg Moriarty.

Mr Djokohadikusumo says the relationship is better than that between Australia and the current Yudhoyono administration.

Vote checking is now underway to determine who won last week's presidential poll. The more credible private surveys puts Joko Widodo in front.