I read Trump’s Black vote in Wisconsin was 50%.
Black population of WI is 6%. This is half of the national proportion.
Additionally, black vote in 2020 in WI had only 50% turnout, down from 2016.
Concentrated in Milwaukee, about 90,000 votes. 50% would be 45K total votes. If Trump increased 30% with them it would be 13K. The alleged overall Biden lead was 20K.