THE COMPLETE ANSWER
From the period between the civil war and the 1970’s, the south held animosity toward the republican party over Lincoln’s civil war. This led to the Democratic and Republican parties having both conservative and classical liberal members.
Beginning between 76 and 80 this began to change because the democratic party had been captured more aggressively by the radical left and the feminists. Plus the left had used immigration starting in 1964 as a means of achieving the socialist revolution (tearing down the american experiment) through demographic warfare where they had failed by propaganda and pseudoscience (marxism, boazianism, freudianism, cantorian mathematics, and keynesian post marxist economics.)
By and large the democratic effort has been effective for large business and finance. So many large business owners that serve the unproductive, laboring, working, and lower middle classes (what he invests in), are better off with policy that increases consumption.
Whereas the republican (Aristocratic) is far more concerned with accumulating capital in Human (eugenic), behavioral (normative), institutional (rule of law by tort reciprocity – not rule BY legislation), and territorial than current consumption which consumes human capital (dysgenic, dysnormative, discretionary rather than reciprocal.)
So between his AGE, his REGION, and his INTERESTS he votes for conservative democratic policies.