President Cristina Fernandez plans a radical expansion of the franchise, to add 3 million to voter rolls.
Argentine prosecutors put a former president on trial for bribery on Tuesday, accusing Fernando de la Rua of bribing senators for votes.
Mexico's leftist presidential candidate brought a pig, a sheep and chickens to a news conference on Tuesday.
Venezuela's "colectivos" - radical organizations that call themselves the guardians of Hugo Chavez's socialist project and defenders of their local communities.
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