I didn’t mean to suggest “outnumbered;” I meant to say that the urban/rural percentages are slightly different between states and that that’s what makes the difference in ideology.
More concretely, it isn’t that Southerners are worse than anybody else; it’s that rural folks everywhere are equally terrible. Urban southerners are just as cosmopolitan as northern ones and rural folks from (for example) Oregon are just as backwards and racist as rural folks from Georgia. The only thing that makes Oregon a “blue state” and Georgia a “red state” is that metropolitan Portland etc. make up a slightly higher percentage of Oregon’s total population than metropolitan Atlanta etc. make up of Georgia’s.