A woman walks past a poster bearing a picture of leading opposition All Progressive Congress presidential candidate Mohammadu Buhari along the highway in Lagos on January 14, 2015. Nigerians go to the polls in a month’s time to elect a new president against a backdrop of a raging Boko Haram insurgency, economic troubles and persistent concerns over rampant corruption. President Goodluck Jonathan is hoping to win a second, four-year term at the February 14 vote but is expected to be run close by former military ruler Muhammadu Buhari. AFP PHOTO / PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)