African americans are the most politically homogeneous ethnic group; to say that one race (~14% of the population) can be a reliable predictor of affiliation, d

African americans are the most politically homogeneous ethnic group; to say that one race (~14% of the population) can be a reliable predictor of affiliation, does not imply that all races are equally correlated to parties. If a measure accurately predicts less than 20% of outcomes, I would not declare it to be 'good'. Section 9 of this paper addresses race and party affiliation best.[1] If you look at the graph of white (non-hispanic) affiliation, you can see that 38% are independent, 32% republican, and 26% are democratic. You may have also read the table which exposits the racial composition of the various partisan groups, but this does not address race a as a predictor of political stance or vice versa. [1] http://www.people-press.org/2012/06/04/section-9-trends-in-party-affiliation/ http://www.people-press.org/2012/06/04/section-9-trends-in-p...