As Indonesians head to the polls in April, religion and the economy will likely take center stage as President Joko Widodo seeks re-election, experts told CNBC.
Commonly known by his nickname "Jokowi," the incumbent president is up against former Lieutenant General Prabowo Subianto in the upcoming elections — a replay of the 2014 elections. Both candidates had previously faced off in the 2014 polls which saw Widodo narrowly defeat Prabowo after garnering 53 percent of the votes.
While Widodo is currently leading in opinion polls, his chances of re-election are contingent on his religious credentials and ability to push Indonesia's economy forward.
Like the previous election, it is difficult to determine the winner beforehand because the "support for candidates are so close," Alexander Raymond Arifianto, a research fellow at the S. Rajaratnam School of International Studies in Singapore, said during an interview with CNBC's Capital Connection on Friday.
However, religion and identity politics are a "far more salient issue" in this year's elections, Arifianto said. He explained that identity politics — which he defined as the usage of religious and/or ethnic symbols by certain groups of people for their own political ends — could be one of the key deciding factors of Widodo's election success.
Religion is playing an increasingly important political role in Indonesia, which has the largest Muslim population in the world.
Widodo's selection of the highly influential Muslim cleric Ma'ruf Amin as his running mate has been seen by many as a move to enhance support from conservative religious groups.
Rallies against Jakarta's governor in 2016 had cast serious doubt on Widodo's religious credentials after his ally, Basuki "Ahok" Tjahaja Purnama, was imprisoned on charges of blasphemy. "Ahok" — the capital's first Chinese Christian governor — was found guilty of insulting the Quran after making references to the religious text in his rally speech. Those protests quickly spread, with opposition supporters using it as a platform to criticize Widodo's government.
Some of those Islamic protesters are now backing Prabowo, according to Arifianto.
Although Widodo is leading in double digits in the opinion polls and has far more financial support than Prabowo, the former lieutenant general has far more "hardcore, die-hard supporters — mainly from this Islamist camp," Arifianto noted.
"They are going to back (Prabowo) no matter what, and they are going to support him in a lot of provinces, like West Java and Banten, that have strong Islamic undertones in their population," he said, adding that those supporters might be able to turn the tables around.
Indonesia's economy is another factor that weighs heavily on Widodo's chances of re-election, said Hasan Jafri, the founder and managing director of HJ Advisory, a Singapore-based consultancy firm.
In his 2014 campaign, Widodo had promised to raise GDP growth to 7 percent by the end of his first term — but economic growth has remained relatively constant, hovering around 5 percent since he took office.
During his first term, Widodo tried to establish himself as a national leader after winning by a very narrow margin, Jafri told CNBC's Street Signs on Friday. "But in the second term, I would expect that there would be a bit more decisive decision-making, and removing some of the hurdles that slow growth."
At the current forecast of 5 percent, Indonesia's growth is going to be "pretty much flat" relative to last year, Jafri said.
The topic of economic nationalism will also likely surface in the election campaigns of Widodo and Prabowo, Jafri said. In other words, both candidates are likely to pledge policies that favor domestic control of the economy.
The 1997 economic crisis is something that looms large in Indonesian polity, Jafri added, as "Indonesians had to sell assets to foreign investors — and in some cases, they really didn't have a choice."
Since then, there have been changes in laws that require foreign investors to sell their assets to Indonesian companies.
But ownership of Indonesian assets is still a "critical issue," Jafri said, and that's a strain that runs through the country's political system.