Security is a key issue for Mexican voters. Here's a look at the candidates' stances on the topic cnn.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from cnn.com Daily Mail and Mail on Sunday newspapers.
The election is poised to be full of firsts, from the likelihood of the first female president to expanded voting in the U.S. to the billing of being the largest yet