Florida edition:

"One party, that we know of, is going to challenge every voter that’s being foreclosed on," McFall said.

People whose homes are in foreclosure may change their addresses and forget to update their voter registrations. Political parties send letters to these people with instructions to the post office not to forward the mail. If the letters are returned to the sender, a challenge is filed, claiming the voter doesn’t live where he or she is registered to vote.

"With our economic crisis," McFall said, "it’s going to cause these challenges."

Voting-rights activists call it "caging."

McFall, a Republican, said afterward the party known to be doing the foreclosure challenges is the Republican Party. A call to the head of the Volusia County Republican Party was not returned.