Political polarization is a driving force in income inequality

Once again, researchers have found that political polarization is a driving force in income inequality.
According to a study published in the Journal of Elections, Public Opinion and Parties, the two major American political parties are pretty good at looking out economically for their own constituents, and that's it.
“The partisan difference in policy reflects the redistributive difference in the policy’s consequences for the core constituents of the Democratic and Republican parties,” the study’s authors concluded.