Vice President Boakai has made infrastructure, especially road building, central to his campaign.
But he faces accusations his government did too little on corruption and spent two terms pressing for donor funds abroad rather than innovate at home.
Ms Sirleaf, in her defence, said in an October 2 speech that “if we did not have those (UN) agencies and those programmes here, with our limited resources we would not have achieved the things we wanted.” But candidates such as telecoms tycoon Benoni Urey have lashed out at what he calls a “dependency” on foreign aid.
A former executive vice president at Coca-Cola, Mr Cummings cites handling a budget larger than that of Liberia’s government as evidence of his competence to lead, and he is seen as the dark horse of the campaign.
Development, Mr Cummings said at a rally on Thursday, “is not too much to ask of ourselves after 170 years,” in reference to the nation’s founding by freed African-American slaves in 1847.
Liberia’s most famous son, footballer-turned-senator George Weah, attracts huge crowds and has a faithful youth following in a country where a fifth of the electorate is aged 18 to 22, but is blamed for issuing vague promises and for his long absences from the country.
Liberians have praised the nation’s first presidential debates, which were held in Weah’s absence. Some also question his pick for vice president — Jewel Howard-Taylor, the ex-wife of Liberian warlord and former president Charles Taylor.
Charles Taylor is currently serving time in Britain for war crimes committed in neighbouring Sierra Leone, and rumours swirl he is issuing orders by phone from his jail cell. Mr Weah denies contact with him.
While campaigning has been “largely peaceful” according to the NEC, with just one clash between Weah and Brumskine supporters, some Liberians remain worried after sparks of violence at the last elections in 2011 that killed two people.