R-Selection, k-Selection, and Politics
There's a common theory that left-wing ideologies are correlated with r-selected genes and right-wing ideologies are correlated with K-selected genes. This is rather dubious, at least as far as the present line-up of American politics is concerned.
The current home of left-wing ideologies appears to be among descendants of Puritans whereas the current home of right-wing ideologies appears to be among descendants of Borderers. The conflict may seem strange considering that both groups started out as Calvinist. On the other hand, the Puritans were obviously K-selected and the Borderers were obviously r-selected. Maybe the theory made sense back in the days of Andrew Jackson or William Jennings Bryan.
My earlier comments on this can be found here.