Bakari Sellers is a former Democratic member of the South Carolina House of Representatives and a CNN commentator. The views expressed in this commentary are his own.

(CNN) Since the election of President Donald Trump, Democrats have been obsessed with the disaffected Trump voter. I hate to break it to Democrats, but these voters just aren't that into you. Want proof? Look no further than Tuesday's shocker in Alabama.

Seventy-seven percent of white working-class voters -- white voters without a college degree who we can assume voted for Trump -- cast a ballot for Republican Roy Moore. In stark contrast, virtually every black Alabamian -- roughly 96% -- voted for Sen.-elect Doug Jones. Black votes literally paved the way to victory for the long shot Democratic candidate. And statewide candidates in Ohio, Missouri, Florida, Michigan, Pennsylvania, and Maryland should take note.

Bakari Sellerrs

Joe Biden and Bernie Sanders are two notable Democrats with presidential aspirations who have been preoccupied with winning back the trust of disaffected Trump voters. So, after Tuesday, are we going to coddle voters who enthusiastically supported Moore, or are we going to prioritize our party's most loyal voting bloc?

If Democrats expect to be competitive in 2018 and 2020, the answer is simple: Engage black voters.

For a playbook on what effective black voter engagement looks like, Birmingham Mayor Randall Woodfin's campaign offers a strong example.