While it isn't what they mean, I would say both parties are different flavors of far-right. Both are genocidal imperial warmongers that promulgate oppression of the marginalized in support of neoliberal capitalism. One does it openly while the other plays a game of taking credit for social changes it opposed and occasionally throwing a bone or two to those constituencies even while materially screwing them over in all other ways. And it will throw them under the bus the moment they can get away with it.

Really, they are part of the same team and they fight those opposed to them far harder than they fight each other. Good cop/bad cop for the same precinct.