Crucial disputes over Democratic strategy concerning economic distribution, race and immigration have in large part been based on Election Day exit polls that now appear to have been inaccurate in key ways.
According to subsequent studies, those polls substantially underestimated the number of Democratic white working-class voters — many of whom are culturally conservative — and overestimated the white college-educated Democratic electorate, a far more culturally liberal constituency. CONT.
Thomas B. Edsall, New York Times