I'm not naive enough to think that Dems never play dirty, but what's astonishing that you seem to give the Republicans a complete pass with regard to their actual behavior by making a false equivalency: http://www.politifact.com/truth-o-meter/statements/2016/mar/...
Let's talk about George W. Bush's nominees...
Politics is politics and to pretend that one side or the other plays them "dirty" and the other side plays them "clean" is naiveté of an astounding level.