as you can read here (and there is a link for the pdf of the poll at that site).
The results are 44-42 Clinton in the four-way, and 54-39 for Portman.
The last time Monmouth polled Ohio was mid-August, at which time Clinton lead by 4.
From the story:
Clinton is not doing quite as well as Barack Obama did four years ago among black, Hispanic, and Asian voters (73% to 15% for Trump compared with 84% for Obama to 14% for Mitt Romney in 2012). Likewise, Trump is not doing quite as well with white voters (48% to 39% for Clinton) as Romney did (57% to 41% for Obama). These results have not changed substantially since August.
Clinton has a 52% to 35% lead in Democrat-leaning northeastern Ohio plus the 9 th Congressional district that hugs Lake Erie from Cleveland to Toledo. However, this is not as strong a showing as Obama, who won this five-district region by 61% to 38% four years ago. The race is virtually tied at 46% Clinton and 44% Trump in the five districts covering the central and southeastern part of the state, similar to the 49% to 49% tie here in 2012. Trump has a 46% to 37% lead in the remaining part of the state north and west of Columbus, which is similar to Romney's 55% to 44% win here in the last election.
From the poll itself, it is a weighted sample as you can see:
DEMOGRAPHICS (weighted) Self-Reported
28% Republican
40% Independent
32% Democrat
47% Male
53% Female
23% 18-34
25% 35-49
29% 50-64
23% 65+
84% White
12% Black 2% Hispanic
Several of the aggregators were already moving OH back to the Democratic side even before the release of this poll.
President Obama is scheduled for Cleveland next week.
Does not seem that the Dems are abandoning the state.