Election observers on hand for Liberia run-off vote Elections observers from the European Union and the US-based National Democratic Institute (NDI) are on hand for Liberia's run-off vote for a new president, contested by former international footballer George Weah and Vice-President Joseph Boakai. Voters are choosing a successor to President Ellen Johnson Sirleaf, who is stepping down after 12 years as Africa's first elected female head of state, representing the West African country's first democratic transition since 1944. IMAGES AND SOUNDBITES