Cook County officials say more than 97,000 suburban residents voted early last week.
County Clerk David Orr said Monday if the pace continues, early voting may reach a record set four years ago.
Early voting turnout in suburban Cook County is up 84 percent compared to the first week of early voting in 2008. It's 18 percent higher than in the second week of early voting four years ago.
Officials caution, however, that comparisons are tricky. Early voting began a week later this year. And it lasts two days longer to the Friday and Saturday before Election Day.
Suburban voters can cast ballots early at any of 44 early voting sites from 9 a.m. to 5 p.m. through Nov. 3.
Election Day is Tuesday, Nov. 6.