Who was the incumbent U.S. Senator retiring in 2010?
George Voinovich
Sherrod Brown
Rob Portman
John Kasich
Answer
George Voinovich, the incumbent U.S. Senator, retired in 2010. Voinovich had served in the Senate since 1999 and was a member of the Republican Party. His retirement opened up the seat for a new senator, which was ultimately won by Rob Portman, also a Republican.
Justice & Politics: The Jennifer Brunner Quiz Challenge