Politics Today: What is post-partisanship?

Every now and then I find it necessary to, if I may be allowed to use a noun as a verb, Google new terms and concepts that arise in the political nomenclature. I want to be sure of their true meaning and not their implied definition. Two such terms now being bandied about by political commentators and self-selected pundits are "post-racial" and "post-partisan." Voters might want to start pondering where they stand on these two concepts.