The spokesman for Tunisia's Constituent assembly has announced that a final vote on the new constitution is to be held on January 25.

Mofdi Mssedi made the announcement on Friday, a day after the country’s parliament completed its review of each article in the draft charter.

In order for the constitution to be adopted, at least 145 of the national assembly’s 217 elected members must approve the text.

"If the constitution is adopted on the first reading by a two-thirds majority, the signing ceremony will take place on Monday," said Karima Souid, an MP and information officer at the assembly.

The approval would pave the way for the formation of a non-partisan caretaker cabinet headed by interim Prime Minister Mehdi Jomaa.

On January 9, Tunisia's ruling party Ennahda stepped down in an agreement with opponents to end an impasse and make way for a caretaker administration of technocrats to govern the country until new elections later this year.

In September last year, Ennahda and the opposition coalition National Salvation Front agreed to begin talks on the transition plan.

The ruling party announced on September 20 that it had accepted the roadmap proposed by the mediators to end the deadlock that started after the assassination of an opposition politician two months earlier.

The July 25 murder of Mohamed Brahmi created the crisis in Tunisia with the National Salvation Front blaming the government for failing to maintain security and tolerating the militants it accused of the killing.

Tunisia, the birthplace of pro-democracy protests across North Africa and the Middle East, is struggling with a democratic changeover after the overthrow of its Western-backed dictator Ben Ali in January 2011.