Mitt Romney called Latin America a "huge opportunity," saying, "we have to focus on Latin America, its economy is a big as China's."

If Latin Americans could vote, who would they pick? Latin America's two largest countries, Brazil and Mexico, account for more than half of the combined GDP of all of Latin America. Obama came into office very popular among both Mexicans and Brazilians. His tough immigration policies have eroded his popularity in Mexico, where more Pew poll respondents answered "no" than "yes" to the question, "Should Obama be reelected?" He is still very popular in Brazil: 72 percent answered "yes" and 16 percent "no." 

I haven't been able to find poll numbers for Romney in Latin America, but he has proposed even tough immigration policies, which have not endeared him to Mexicans inside the U.S.