In key Mexican state, opposition leads in poll for July vote

MEXICO CITY (Reuters) - Mexico's main opposition conservatives are on track to retain the key electoral bastion of Baja California next month, according to a poll released on Friday, in a vote that could strengthen a fragile cross-party alliance built by President Enrique Pena Nieto to re-energize the economy.

Falling short of a majority in Congress when he won office last year, Pena Nieto forged a loose pact with the two major opposition parties to work together on economic reforms.