The state's election chief says his office spent about $8,000 to mail letters to 3,903 suspected noncitizens on voter rolls last year. It's the first time he's publically offered a price tag for how much it cost to print and mail the letters.
Democrats remain doubtful the search was effective and note the cost doesn't include staff time.
Gessler's office says federal records show about 441 people who received letters are not citizens and registered to vote. But Gessler critics question the accuracy of the records.
Gessler spoke to lawmakers Monday during an annual briefing about his department.