I just haven’t heard many ‘average rubes’ speaking of Obama in a warm, fond way. Clinton was good at establishing an emotional connection. Obama isn’t. His average rube supporters mostly talk about how Republicans are thwarting him. They are attached to the great things Obama would do for them if only the GOP would get out of the way, but as for personal attachment, MrB nailed it. It’s either due to skin tone or it’s nonexistent.
I have heard some speak in warm terms about him. Among those attending his speeches in 2008, many were convinced he was talking to them directly. Remember how he'd bring them to tears? It was a very weird, cult-like response from people who should know better.