Speaking as someone who works in GOP politics I can confirm that the notion that much of the GOP base are wealthy midsize town residents is certainly partially true, but both parties receive a ton of money from huge corporations.
Also, wealthy non-college voters are a HUGE proportion of the GOP's support. Look at the Southern United States or Florida if you ever need any proof.
Yeah didn’t that one NYT piece basically confirm what we all assumed? Dems are popular with low education/low income and high education/low income voters, whereas GOP is popular with low education/high income and high education/high income voters?