I reside in one of those white wealthy CT Fairfield County towns. Romney won virtually every town in the county, albeit by small margins, except for Bridgeport (minority majority) which was a blowout, and consequently, he lost the county my a noticeable margin. The same thing happened in 2014 for the governors election. If it weren't for Bridgeport and maybe Hartford, Connecticut would be relatively competitive. But the same can be said about any other state if you take away their biggest city.
Didn't Obama lose a lot of votes in the "gold coast" of Connecticut in 2012 (albeit not enough to lose the state)?
Well, he won the diverse, larger, and poorer towns in Fairfield County. He lost the whiter and wealthier towns by fairly large margins.