Rhode Island Representative David Cicilline, a Democrat, was sworn in on Wednesday, joining three other openly gay members of Congress.

Cicilline joins Democratic incumbents Tammy Baldwin of Wisconsin, Barney Frank of Massachusetts and Jared Polis of Colorado, all of whom kept their seats on November 2.

A fifth candidate, however, lost his bid to unseat California Congresswoman Mary Bono Mack, a Republican who voted against repeal of “Don't Ask, Don't Tell.” If elected, Stephen P. Pougnet, the mayor of Palm Springs, would have become the first openly gay family man in Congress.

In his election night speech, Cicilline, the former mayor of Providence, recognized the important role he plays as one of only a handful of openly gay lawmakers in Washington.

“I am thrilled to be the next congressman from Rhode Island's First District and so grateful to the members of the LGBT community who supported my campaign. I look forward to going to Washington and fighting for the issues important for all us – creating good jobs, protecting Social Security, working to fight global climate change and, of course, fighting for full equality for our community,” he said.