White liberals despite not voting Democrat at the rate that blacks do are ideology the most liberal voting group. Black voters may vote Democrat in higher percentages, but ideology wise, many black voters are still "conservative" or at least more so than white liberals. The same is not said for white liberals. They are by far the farthest left, most woke group and are not really conservative in any category.
Why is this? Basically where does this step from, start from, develop from?
The Black D electorate represents virtually the entire spectrum of Black opinion, while the white D represent the 40% or so that are most left of center.