'Vouchers for votes' claims in Mexican presidential elections
There have been claims that people in Mexico City were given gift vouchers in exchange for votes by Enrique Pena Nieto's Institutional Revolutionary Party in the run up to Sunday's presidential elections in Mexico.
Mr Pena Nieto has denied the allegations.
Meanwhile, electoral authorities have announced they will perform a recount of more than half of the ballot boxes in the poll after finding inconsistencies in the vote tallies.
David Cuen reports.