President Obama has a 50 percent to 46 percent lead over Mitt Romney among likely Ohio voters -- within the poll's sampling error -- in a new CNN/ORC International poll released on Friday.
The poll found that the hotly contested race in the biggest of the battleground states is essentially unchanged since early October, when a poll taken after the first presidential debate also gave Obama a four-point edge. In the most recent CNN poll, the president had the support of 56 percent of female voters, down from 60 percent in the last poll, with Romney getting 50 percent of the male vote, down from 56 percent in the previous survey.
"It's clear the Romney campaign understands that they've got big problems in Ohio," Obama senior adviser David Plouffe said on Bloomberg Television's Political Capital With Al Hunt. "We've had a clear and sustainable lead there for a long time. Governor Romney's opposition to saving the American auto industry is one of the big problems there."
Obama has kept a small advantage among independent voters -- 49 percent to 44 percent, compared to the 50 percent to 46 percent edge he held in the CNN poll earlier this month. The president has gained three points among voters under age 50, but has lost three points among those 50 and older.
The poll was conducted with 1,009 adults, including 896 registered voters and 741 likely voters, by telephone on Oct. 23-25, with a margin of error of plus or minus 3.5 percentage points.