The Senate's Monday cloture vote on the 2013 iteration of the Senate Employment Non-Discrimination Act (ENDA) is either an important political litmus test for a Republican party in search of a new, more inclusive image or a crucial referendum on American civil liberties -- depending on your viewpoint. The bill would extend federal anti-discrimination protections to workers discriminated against because of their gender or sexual orientation. While observers are skeptical of the legislation's chances in the House, outside groups have spent bucketloads on grassroots and traditional lobbying in support of the law. On the other side? Not so much.