In the US HH income and wealth "influences" candidates. State electoral administration proscribes "voter patterns". (When's the last time Irish-Americans litigated voting rights as a class?) HH income and wealth predicts voter preference for a candidate  regardless of party affiliation or country of origin. That trait is only captured by Census and Dept. of State instruments from noncitizens/"lawfully" resident aliens. They cannot vote.

That "ancestry" map appears quite the exploit of expanded "race or ethnicity" queries first introduced to C2000 self-reporting. There's no telling if this source/"estimate" is original or derivative work product. It's been scrubbed. Rlly?

19,094,109 Americans are found mostly in the South East (people select this ancestry either as a political statement or because their pre-American [?!] ancestry is uncertain).

Self-perception of moribund "nationality", e.g. Scotch-Irish, among US persons of European persuasion is dubious. That was demonstrated quite dramatically by a 23&Me DNA population report, iirc, 2014, 2015. I shared a true story to demo: immigrant entry in the US is the basis of political status.

Diversity is the key to economic and political evolution.