How to produce high approval ratings for Obama
73% of the Democrats polled thought we were on the right track
That made it even more suspicious as to how those numbers could result in a 48% overall right track vote.
So digging deeper, it turns out
36% of those polled were Democrats
In the 2008 election the spread between Democrats and Republicans was 6.5 percentage points not 18 and independents made up 22% of the vote not 26%.
It appears that there have been similar distortions in the various polls measuring Obama's approval ratings.