Mexico

Some are calling it "the Mexican Spring". Born six weeks ago, the student movement YoSoy132 has played a fundamental role in the run-up to Sunday's presidential election. Following a controversial visit to a private university by presidential favourite Enrique Pena Nieto, the protest movement has snowballed across the country. Students are asking for a more democratic and balanced campaign and accuse the country's media of selling their support to the highest bidder.

Mexicans will go to the polls on Sunday to elect a new president, local mayors, senators and members of Parliament. The presidential campaign has been running for three months and the fear of electoral fraud remains a constant worry. Although the electoral watchdog and thousands of observers will be present at the voting stations, it's very difficult to prevent irregularities in the polling process. The buying of votes, as well as the bribing of people with gifts, are old practices.