Sen.
Barack Obama has taken back the lead in Ohio over Sen. John McCain, 49% to 43%, after trailing by four
points in a Public Policy Polling survey conducted three weeks ago.
Key finding: "Much of the movement in Obama's direction
since the last poll has come from a tightening among white voters.
Where McCain previously had an 18 point advantage it is now just 6.
Given the overwhelming support of black voters for Obama, McCain
probably can't take the state without at least a 12 point advantage
with whites."