Jessenia Fernandez, with the non-partisan civic group Florida Immigrant Coalition, works to help new citizens understand their rights and exercise their votes. Fernandez said most of these new Latino voters overwhelmingly support Obama, in part because he endorses the so-called "Dream Act" to legalize the status of several million undocumented youth.

Peruvian-American Juana Sopline de Rojas said immigration reform is the motivating issue for her in this election.

"So that they can get out of this, so that they can study. So that Latinos can study and then after they can get their papers, [their legal status]," said de Rojas.

In trying to get new voters for both parties to the polls, Fernandez says voters who are undecided about whom they support may not vote at all.

“Those are the people who are not that enthusiastic about this election. They are kind of like “iffy" [not sure]. They are [thinking], 'I do not know if I am going to vote for this person or that person.' But if they already have in their minds that they are going to vote, they already know who they are voting for and they are enthusiastic about it,” said Fernandez.

In Florida, the growing number of non-Cuban Latinos help give Democrats an advantage in numbers of registered voters. But most polls either give Romney a slight edge or say the race is too close to call.