His numbers are higher because gas is lower. Most people don’t keep up with politics. However, if they have more spending money they give the credit to the president (mainly it is the only politician they know the name of). They are our low info voter and are growing daily.
The Democrats keep bragging about the lower official unemployment rate. George Will on Special Report last night pointed out that if the same percentage of the population was in the labor force as when Obama took office, the unemployment rate would be 9.9. So the apparent improvement is entirely from people giving up on trying to get a job.