Partisan Gap in Obama Job Approval Wides… 

Partisan Gap in Obama Job Approval Widest in Modern Era by the PewResearchCenter.

Look at the chart. For the Total, I added and divided by 3 and got 57.3% for Obama; and 59.66% for Bush.
http://pewresearch.org/pubs/1178/polarized-partisan-gap-in-obama-approval-historic