President Felipe Calderon says organized crime is threatening Mexico's democracy through involvement in elections.
Calderon says meddling by drug cartels in elections is "a new fact, a worrisome fact, a threat to everyone."
Calderon urged the country to block such interventions in a 90-minute speech marking his five years in office Sunday. He did not provide specifics on how he plans to stop cartels from manipulating July's national elections.
His sister recently lost the governor's race in the family's home state of Michoacan in an election fraught with accusations of criminal manipulation. Prosecutors are investigating a taped phone call in which a cartel figure threatened voters and accused a rival of financing a candidate.