Both leading left- and right-wing candidates claimed victory in a fiercely contested Mexican presidential election. Electoral authorizes have said that the race was too close to call and that final results would not be announced until Wednesday. Since January, Mexico has seen increasingly violent labour disputes and there is fear that the election stand-off could make things worse.
See "Rivals claim victory in Mexican election", Richard Lapper and Adam Thomson, Financial Times, July 2, 2006