Ohio's congressional delegation will remain the same. All 16 incumbents have won re-election in Tuesday's midterm elections. That keeps the delegation at 12 Republicans and four Democrats.
The sweep was expected, with most incumbents holding safe seats after U.S. House districts were redrawn because of population changes in the 2010 U.S. Census.
In partial, unofficial returns, nearly all the incumbents had more than 60 percent of the vote.