Politicians are only true to their "roots" when they're in opposition. Once in power that all quickly goes out the window for "expedience" to "solve" the problems we currently face, and to not let the opposition get in a word edgewise.

Pay attention and you'll see that people from both parties do it consistently. Once you recognize that the only reasonable conclusion to come to is that you can't vote republican or democrat since either will betray you once they've gotten your vote and are in office.