The PKS has dropped its calls for Islamic law and is working to integrate into Indonesia's secular political system.

WSJ: Indonesia Polls Show Hard-Line Islamists Losing Ground

Mr. Yudhoyono, who came to power that year, relied on the PKS and other Islamic parties to shore up his coalition.

WSJ: Indonesia Polls Show Hard-Line Islamists Losing Ground

"Radicalism will not have any place in this country, " says Zulkieflimansyah, a PKS parliamentarian who, like many Indonesians, uses only one name, and is running again this year.

WSJ: Indonesia Polls Show Hard-Line Islamists Losing Ground