LikelySafe D race is likelysafe D.
"But the poll may have oversampled Democratic voters, who may be more likely to support Issue 1. If the voters surveyed had decided 2016 election, Ohio would have gone to Hillary Clinton by 6 points instead of to Donald Trump by 8. The poll surveyed 500 likely Ohio voters by landline and cell phone from Oct. 4 to 8. The poll has a margin of error of 4.4 percentage points."
Not safe D.
Other polls have shown Brown up by double digits as well, and have suggested that turnout in Ohio is not going to be anywhere near as Republican-friendly as it was in 2016. Brown is safe.