Former President Bill Clinton is warning that President Barack Obama’s edge in the polls may not be enough to defeat GOP hopeful Mitt Romney because the Republican Party was using voter suppression techniques to target traditionally Democratic voters like African-American church members and the elderly.

“How much will the vote be lessened or reduced by the fact that in Florida except for four counties, the pre-election voting — advanced voting — has been cut down to and doesn’t include the Sunday before the election?” Clinton told CNN’s Fareed Zakaria in an interview that aired on Sunday.