Bullshit
I started looking at poorest county in some southern state-then looked up their political demographics
Alabama-Perry County - not an urban county by any means. 73.8 democrats in last election and every pres. election since 2000
Sumpter Co Alabama has gone red since 1964
Georgia-Clay County -not an urban area, blue since at least 2002
Holmes County, Miss. last time they voted red was 1964
Allendale County, SC. - yeo…75.6% blue
As I said, it’s not 100% but I see enough of the poorest counties in the states going blue to blow your statement out of the water