The Institute for Policy Research at the University of Cincinnati has released its latest Ohio Poll. The poll surveyed 529 likely voters in the Democratic primary from February 21 to 24, 2008, by telephone. The results:
Hillary Clinton 47%
Barack Obama 39%
John Edwards 9%
Other/Kucinich 2%
Don't Know 4%
The poll's margin of error is plus or minus 4.3 percent. There are no trend lines for this poll as far as I can tell since it appears to be IPR's first for this primary.
Update: Commenters point out some possible flaws in this poll. One is that IPR does not indicate that they rotate the candidate names. It would also be interesting if they push leaners. (Edwards and Kucinich both dropped out of the race, although their names still appear on the ballot.)
The likely voter screen and sample demographics are not included in the report. And the poll was in the field on Thursday through Sunday. Many pollsters do not like to call on Saturday and Sunday since they tend to get strange results.
Nevertheless, this poll is reasonably consistent with others that show Clinton ahead but with Obama increasing his support.