One month the first round election, which failed to produce an outright winner from a field of 20 candidates, former AC Milan striker George Weah and economist Ellen Johnson Sirleaf will runoff for the top job.
Tuesday's run-off, which unfolded mostly peacefully around the forested West African country, capped a process mandated under an August 2003 peace pact to end Liberia's second civil war since 1989.
In the October 11 first round ballot, Liberians swamped polling booths in the first election since a 14 year civil war.
Despite over 1.3 million people eligible to vote, lines to vote in the bullet scarred capital Monrovia were notably thinner this time, but it was more evident in remote rural areas.
"We haven't had the long queues we had before, but that may be in part because the procedure was simpler ... just two candidates," said Alan Doss, head of the 15,000-strong UN peacekeeping mission in Liberia.
It will take two weeks for votes to trickle in from over 3 thousand polling stations.
The result will make history if either contender wins.
39-year-old Weah may be a political novice but his cult following and celebrity status could make him the world’s first top international footballer to become a head of state.
A victory for Ellen Johnson Sirleaf could make the 66-year-old grandmother Africa’s first elected female president.
Weah rode his phenomenal popularity as Liberia's favorite son to a 10-point lead in the first round. His ability to mobilize the ruling Liberian elite and armies of young civil war veterans without jobs or opportunity could get him over the line.
Though securing endorsements from nine of his opponents from the previous election round, Weah’s campaign is stalling in the face of a well funded surge by Sirleaf, who has three decades of political experience.
Liberians hope the new president will turn the page on a savage civil war which ended two years ago and left the West African nation's economy in tatters, created a generation of child soldiers and killed a quarter of a million people.