Mexico City - Mexico's Institutional Revolutionary Party (PRI) held power for more than seven decades in Mexico, but its 80th anniversary falls Wednesday with the party out of power, albeit with promising opinion polls.
In the wake of the 1910-20 Mexican Revolution, the winning factions resorted to violent power struggles. The PRI was founded on March 4, 1929, to institute peaceful transitions to power among the revolutionary elements.
The PRI is a member of the Socialist International, but its policies are difficult to classify.