Clinton beats McCain by 10 percentage points, while Obama's margin over McCain is 3 percent.
The survey polled 542 registered voters across Ohio. The exclusive poll has a margin of error of plus or minus 4.3%.
Hillary Clinton's margin over John McCain was 52% to 42%, with 7% undecided. Barack Obama's lead was 47% to 44% in a head-to-head contest, with 8% of Ohio voters saying they could not yet decide that match-up.
In a Clinton-McCain head-to-head contest, Clinton runs strongest among women, moderates, and those who live in the eastern part of Ohio. McCain is strong in Ohio in every other geographical region, and among men, pro-life voters, and those who consider terrorism and immigration important national issues.
Barack Obama's strengths when matched up wtih John McCain are among women, voters under the age of 35, and again those in the eastern part of the state.
McCain defeats Obama among voters in every other geographic part of Ohio, and among men, middle aged voters, and evangelicals.