Quinnipiac's latest Ohio survey (March 10-15, 1299 RV, MoE +/- 2.7%) finds President Obama's approval rating in the state down 10 points from last month and the race for the open Senate seat wide open.

Obama's approval rating dropped from 67% in February to 57% in March -- including a 17-point drop among independents -- and his disapproval rating doubled from 16% to 33%.

In the race to replace the retiring Sen. George Voinovich (R), the survey finds that most voters aren't yet paying attention and that a large number remain undecided. Democrats tested include Lt. Gov. Lee Fisher, Sec. of State Jennifer Brunner, Rep. Tim Ryan and State Rep. Tyrone Yates. Republicans tested include former Congressman and Bush cabinet member Rob Portman and State Aud. Mary Taylor.

GOP Primary
Portman 31
Taylor 14
Und 52

Dem Primary
Fisher 18
Brunner 14
Ryan 12
Yates 6
Und 46

General Election
Fisher 41 - Portman 33
Fisher 41 - Taylor 31

Brunner 39 - Portman 34
Brunner 38 - Taylor 31