Research concerning the biological basis of political behavior rarely enters the public discourse of campaigns and elections. Yet the evidence suggests a genetic basis for political ideology, turnout, and leadership as well as a relationship between brain functioning and behavior (for example, increased levels of oxytocin seem to increase political trust).*
Add to this list "The Ancestral Logic of Politics: Upper Body Strength Regulates Men’s Assertion of Self-Interest over Income Redistribution," an article (forthcoming) in the journal Psychological Science by Michael Bang Petersen and Daniel Sznycer. Their main finding is that weaker men are more likely to support income redistribution while stronger men are less likely to do so. A summary of the article in the Economist reads: