Mary Jo Kilroy (D): 47
Steve Stivers (R): 44
Don Eckhart (I): 7
(MoE: ±4.2%)
A Benenson Strategy Group poll from May showed Kilroy leading Stivers by 47-37, so we at least know that Kilroy is awfully close to the 50% mark.
Judging by the crosstabs, independent Don Eckhart picks up support fairly equally across the board, but I would guess that many voters are merely parking their votes with an unknown option for now, and are instead truly undecided about their options. Eckhart's previous claim to fame was an independent bid against Stivers for the state Senate four years ago, where he claimed 9% of the vote. Eckhart was endorsed by the Ohio Right to Life both then and now, so perhaps he might peel off a few wingnuts from the GOP's right flank. Then again, 7% of pro-choice voters chose Eckhart in this poll...