- Among the frontrunners are footballing icon George Weah, incumbent Vice President Joseph Boakai, longtime opposition figure Charles Brumskine and former Coca-Cola executive Alexander Cummings.
- Regardless of the result of Tuesday's election, the international community is keen to see Liberia's history of coups, assassinations and exiled dictators shift to a more stable footing after 12 years of peace under Sirleaf.
Liberians head to the polls on Tuesday to elect a new president in a contest set to complete the country's first democratic transition of power in more than 70 years.
After a campaign hailed for a vibrant and violence-free debate, the small West African nation's 2.18 million registered voters will begin casting their ballots between 8am and 6pm local time.
With Africa's first female elected head of state, Ellen Johnson Sirleaf, stepping aside after a maximum two terms, Liberians will choose from a crowded field of 20 candidates, although just one of them is a woman.
"The future of the country is in your hands, no one is entitled to your vote, not because of party, ethnicity, religion or tribal affiliation," Sirleaf, a co-winner of the 2011 Nobel Peace Prize, declared in a speech on Monday.
Among the frontrunners are footballing icon George Weah, incumbent Vice President Joseph Boakai, longtime opposition figure Charles Brumskine and former Coca-Cola executive Alexander Cummings.
Also waiting in the wings with potentially significant vote share are telecoms tycoon Benoni Urey and former central bank governor Mills Jones.
The first official results are expected within 48 hours. If no candidate wins 50 percent of the vote, then a run-off of the top two contenders will be held on November 7 — an outcome analysts say is a near certainty.
"There is going to be a run-off, and that is most likely to be the parties that have gone to a run-off in the last two elections," Ibrahim Al-Bakri Nyei, a Liberian political analyst at London's School of Oriental and African Studies (SOAS), told AFP.
Sirleaf's Unity Party swept the vote in 2005 and 2011, results that Weah's Congress for Democratic Change (CDC) contested in court.
"The third place candidate is also very important in this round of elections because you somehow become the kingmaker," Al-Bakri Nyei noted, placing his bet on Cummings slick, upstart campaign to cause damage to the two main groupings.