Quinnipiac University also polled the U.S. Senate race in Ohio:
In Ohio's U.S. Senate race, women voters propel Democratic incumbent Sen. Sherrod Brown to a 51 - 34 percent overall lead over U.S. Rep. Jim Renacci, the Republican challenger.
Women back the Democrat 58 - 25 percent. Men are divided with 44 percent for Renacci and 43 percent for Brown. Brown leads 91 - 2 percent among Democrats and 51 - 30 percent among independent voters. Renacci takes Republicans 79 - 6 percent.
Ohio voters approve 55 - 29 percent of the job Brown is doing and give him a 48 - 29 percent favorability rating.
Renacci gets a negative 22 - 26 percent favorability rating, as 50 percent don't know enough about him to form an opinion.
Health care is the most important issue in deciding how they will vote for U.S. Senator, 28 percent of Ohio voters say. Another 25 percent cite the economy, with 15 percent for immigration and 14 percent for gun policy.
"Sen. Sherrod Brown is in a strong position for re-election with a 17-point lead and an opponent who is not well-known," Brown said.
From June 7 - 12, Quinnipiac University surveyed 1,082 Ohio voters with a margin of error of +/- 3.7 percentage points, including the design effect. Live interviewers call landlines and cell phones.
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