Two points:

First,
If one reads the polling analyses of D. J. Drummond (who blogs on Wizbang), one might actually agree with Roger’s last sentence. Drummond’s provides very plausible arguments for why the pollsters are very very wrong this election cycle (remember the exit polling in 2004?).

Second,
I believe that the middle class is slowly realizing that the democratic party has become a party controlled by ivy league elites and held hostage by special interest groups. More and more, they bring to mind the folllowing thought by John Gardner:

An excellent plumber is infinitely more admirable than an incompetent philosopher. The society that scorns excellence in plumbing because plumbing is a humble activity and tolerates shoddiness in philosophy because it is an exalted activity will have neither good plumbing nor good philosophy. Neither its pipes nor its theories will hold water.

Think of the excoriation of Sarah Palin because she is neither ivy league nor a Washington insider v. the adulation heaped upon Obama purely due to his rhetoric and style. As Roger points out, the tried and failed policies of the democrats have been proven to “not hold water.”