The nation's attitudes on systemic racial bias and the Black Lives Matter movement have shifted markedly in the past month. As my colleague Amy Walter wrote, it feels like George Floyd's death is an "inflection point" among white voters, noting a new Monmouth poll found 57 percent of all voters agree "police officers are more likely to use excessive force on blacks," up from 33 percent in 2014.

But another phenomenon of this moment: a noticeable uptick in support for African-American candidates, especially in Democratic primaries for seats where whites have typically won nominations in the past.

Nowhere is this more immediately apparent than in next Tuesday's primaries in New York, Virginia and Kentucky and a week later on June 30 in Utah. Jamaal Bowman's challenge to Democratic Rep. Eliot Engel (NY-16) has attracted the most attention, but wins by Mondaire Jones (NY-17), Cameron Webb (VA-05) and Charles Booker (Kentucky Senate) could illustrate a larger trend.

In Kentucky, a state that's just nine percent black, protests in the aftermath of Breonna Taylor and David McAtee's deaths have given

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