UPDATE 1-Mexican election favorite Pena Nieto extends lead over rival
Posted on March 26, 2012 at 07:10 AM EDT
MEXICO CITY, March 26 (Reuters) - Mexican presidential front-runner Enrique Pena Nieto has extended his big lead over ruling party candidate Josefina Vazquez Mota with barely three months to go until the election, an opinion poll showed on Monday.