Voters queue outside the polling station as the voting operation is delayed, during the presidential election on August 27, 2016 at a school in central Libreville. The people of Gabon began casting their ballots on August 27, 2016 in a vote to decide whether President Ali Bongo will remain in office or be unseated by a career diplomat and close associate of his late father, who ran the country for 41 years. The election takes place in a climate of persistent social unrest driven in large part by the economic impact of the slump in the price of oil, which has long dominated Gabon's economy. / AFP PHOTO / MARCO LONGARIMARCO LONGARI/AFP/Getty Images

Voters queue outside the polling station as the voting operation is delayed, during the presidential election on August 27, 2016 at a school in central Libreville. The people of Gabon began casting their ballots on August 27, 2016 in a vote to decide whether President Ali Bongo will remain in office or be unseated by a career diplomat and close associate of his late father, who ran the country for 41 years. The election takes place in a climate of persistent social unrest driven in large part by the economic impact of the slump in the price of oil, which has long dominated Gabon's economy. / AFP PHOTO / MARCO LONGARIMARCO LONGARI/AFP/Getty Images

BROOKLYN, MI - AUGUST 27: Sam Hornish Jr., driver of the #95 Thrivent Financial Chevrolet, sits in his car during practice for the NASCAR Sprint Cup Series Pure Michigan 400 at Michigan International Speedway on August 27, 2016 in Brooklyn, Michigan. (Photo by Dylan Buell/Getty Images)

The president of a polling station in central Libreville tries to calm voters complaining for the delay of the voting operation during the presidential election on August 27, 2016. The people of Gabon began casting their ballots on August 27, 2016 in a vote to decide whether President Ali Bongo will remain in office or be unseated by a career diplomat and close associate of his late father, who ran the country for 41 years. The election takes place in a climate of persistent social unrest driven in large part by the economic impact of the slump in the price of oil, which has long dominated Gabon's economy. / AFP PHOTO / MARCO LONGARIMARCO LONGARI/AFP/Getty Images

Gabonese President Ali Bongo Ondimba and his wife Sylvia greet supporters after casting their vote at a polling station during the presidential election on August 27, 2016 in Libreville. The people of Gabon began casting their ballots on August 27, 2016 in a vote to decide whether President Ali Bongo will remain in office or be unseated by a career diplomat and close associate of his late father, who ran the country for 41 years. The election takes place in a climate of persistent social unrest driven in large part by the economic impact of the slump in the price of oil, which has long dominated Gabon's economy. / AFP PHOTO / MARCO LONGARIMARCO LONGARI/AFP/Getty Images

Gabonese President Ali Bongo Ondimba arrives to cast his vote at a polling station during the presidential election on August 27, 2016 in Libreville. The people of Gabon began casting their ballots on August 27, 2016 in a vote to decide whether President Ali Bongo will remain in office or be unseated by a career diplomat and close associate of his late father, who ran the country for 41 years. The election takes place in a climate of persistent social unrest driven in large part by the economic impact of the slump in the price of oil, which has long dominated Gabon's economy. / AFP PHOTO / MARCO LONGARIMARCO LONGARI/AFP/Getty Images

Gabonese President Ali Bongo Ondimba arrives to cast his vote at a polling station during the presidential election on August 27, 2016 in Libreville. The people of Gabon began casting their ballots on August 27, 2016 in a vote to decide whether President Ali Bongo will remain in office or be unseated by a career diplomat and close associate of his late father, who ran the country for 41 years. The election takes place in a climate of persistent social unrest driven in large part by the economic impact of the slump in the price of oil, which has long dominated Gabon's economy. / AFP PHOTO / MARCO LONGARIMARCO LONGARI/AFP/Getty Images

TOPSHOT - Gabonese voters queue to cast their ballots during the Presidential Election on August 27, 2016 in Libreville. The people of Gabon began casting their ballots on August 27, 2016 in a vote to decide whether President Ali Bongo will remain in office or be unseated by a career diplomat and close associate of his late father, who ran the country for 41 years. The election takes place in a climate of persistent social unrest driven in large part by the economic impact of the slump in the price of oil, which has long dominated Gabon's economy. / AFP PHOTO / MARCO LONGARIMARCO LONGARI/AFP/Getty Images