Tunis: Tunisian President Munsef Marzouki announced on Saturday he will stand for re-election in November, in a key vote almost four years after a revolt that sparked the Arab Spring uprisings.

The polls, along with parliamentary elections in October, are seen as the final step in Tunisia’s transition after more than two decades under strongman Zine Al Abidine Bin Ali who was toppled in 2011.

The moderate Islamist party Al Nahda won Tunisia’s first post-Bin Ali election the same year.

Marzouki, a fierce opponent of Bin Ali and a secular ally of Al Nahda, was chosen as president in December 2011 in a vote in the National Constituent Assembly.

The 69-year-old kicked off his re-election campaign with an attack on “dirty money” in politics.

“My candidacy is an example of transparency,” he said. “We must not allow corruption in this first democratic experience,” he said after registering for the November 23 vote.

Critics often accuse cronies of Bin Ali’s former autocratic regime of seeking to derail the reform process.

Marzouki faces a number of rival candidates including National Assembly speaker Mustafa Bin Jafar, a former central bank chief, and one-time premier Beji Said Al Sebsi.

Al Sebsi, 87, earlier this month accused “infiltrators” in his party who oppose his candidacy of wanting to kill him, prompting an inquiry by prosecutors.

The north African nation, the cradle of the revolutions that shook the Arab world, is seen as a beacon of hope compared with other chaos-hit countries like Libya and Egypt.

But its transition to full democracy has been turbulent at times.

In the wake of the 2011 uprising, Tunisia was rocked by violence blamed on hardline Islamists who were suppressed under the former dictator, as well as social unrest over poor living conditions.

The authorities have struggled to root out militant groups, some of them Al Qaida loyalists, who have killed dozens of police and troops since the revolution, particularly near the Algerian border.

In January, Marzouki and other leaders signed a new constitution — seen as one of the most modern in the Arab world — that took more than two years to draft.

Executive power is divided between Prime Minister Mahdi Juma, who has the dominant role, and the president, who retains important prerogatives, notably in defence and foreign affairs.

Marzouki, a French-trained doctor and veteran opposition rights activist, was Bin Ali’s bete noire throughout his political career and was forced to live in exile in France for a decade.

His critics say presidential ambitions motivated him to form an alliance with Al Nahda.

Marzouki has insisted that the coalition was the only way to ensure sustainable democracy.

His rise to power came almost a year after the self-immolation of a Tunisian street vendor sparked a protest movement that spread across much of the Arab world, sweeping away long-time dictators in Egypt and Libya.

Marzouki headed the Tunisian League for the Defence of Human Rights from 1989 until 1994 when he was forced out by Bin Ali supporters.

A prolific writer, he has penned several books in French and Arabic including one titled Dictators on Watch: A Democratic Path for the Arab World.