Party preferences by race and ethnicity under Obama have maintained about the same gap as the below chart shows. In 2008 there was a 58% gap today it is a 55% gap. What has changed is that both racial groups identify less with Democrats.
Whites and nonwhites have long shown differing political party preferences, with nonwhites widely favoring the Democratic Party and whites typically favoring the Republican Party by at least a small margin. .
The results are based on yearly aggregates of Gallup poll data since 1995, the first full year that Gallup regularly measured Hispanic ethnicity. For this analysis, Gallup defines whites as non-Hispanic whites, and nonwhites as blacks, Hispanics, Asians, and all other races combined.