The Advocate: Is Bernie Sanders the Most LGBT-Friendly Candidate? [View all]
The thrust of Sanders's campaign thus far like his political career as the mayor of Burlington, Vt., 16 years in the U.S. House of Representatives, and the past seven in the U.S. Senate has focused on supporting working-class Americans through elevated taxes on the wealthy and correcting income inequality "which is now reaching obscene levels," he told the AP.
But Sanders has also been a steadfast and reliable supporter of LGBT equality, supporting the Employment Non-Discrimination Act when it passed the Senate in 2013 and even calling on President Obama to evolve already and support marriage equality in 2011. He's a cosponsor of the federal LGBT-inclusive Student Non-Discrimination Act and has consistently voted against bills seeking to amend the Constitution to ban same-sex marriage, while cosponsoring a bill that would repeal the remaining portions of the so-called Defense of Marriage Act. Sanders has a perfect score of 100 percent on the Human Rights Campaign's latest Congressional Equality Index.
Sanders used Twitter to highlight that long-standing support Monday, just one day before the Supreme Court heard arguments on marriage equality. That comment included an overt reference to Clinton albeit to the former president and not the current presidential hopeful:

http://www.advocate.com/politics/election/2015/04/30/bernie-sanders-most-lgbt-friendly-candidate