Democrats have taken a seat from House Republicans after the counting of provisional ballots in a race in central Ohio.
Unofficial results Sunday showed that Democrat Mary Jo Kilroy beat Republican Steve Stivers by more than 2,000 votes.
Provisional ballots are issued at polls to people who believe they were wrongly denied the right to vote. Stivers had held a lead of less than 600 votes before they were counted.
Kilroy narrowly lost election to the 15th Congressional District seat in 2006 to Republican Deborah Pryce. Pryce chose not to seek re-election.