Particularly a strong number of centrists and conservatives of color. It's not that black people are overwhelmingly liberal; it's that a lot of black conservatives will not vote for Republicans. Other POC to lesser degrees than black folks, but still a sizable number of conservatives/centrists of color voting for Dems over Republicans. Their ideologies don't line up with party voting as closely/neatly as white voters.

Add to that the fact that more policies enjoying popularity across the board are in the Dems wheelhouse than the GOP, and they NEED to work on voter protections.