The number of U.S. senators scoring zero percent support for the gay, lesbian, bisexual and transgender community doubled since the last Congress, an upcoming scorecard from the Human Rights Campaign (HRC) found.

HRC's Congressional Scorecard for the 111th Congress ranks 32 senators with zero percent support for gay rights, up from 16 in the last survey. House members ranked at zero percent support increased from 143 to 144.

“While advancements for equality were made this Congress, a strong and devoted group of anti-LGBT legislators continue to stymie the progress LGBT people deserve,” Joe Solmonese, president of HRC, said. “The fact that the first ever vote to repeal 'Don't Ask, Don't Tell' in the House of Representatives was countered by a filibuster in the Senate illustrates the landscape.”

However, the number of lawmakers offering strong support has increased over the last Congress.

Lawmakers scoring 90 percent or above increased from 128 to 145 in the House and from 32 to 36 in the Senate. An increase of 21 lawmakers.

The scorecard ranks legislators based on their votes or support for legislation that directly affects the gay community, including the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act, repeal of “Don't Ask, Don't Tell,” the Employment Non-Discrimination Act (ENDA), repeal of the Defense of Marriage Act (DOMA), and the Uniting American Families Act (UAFA).

The survey is expected to be released sometime after the midterm elections, giving senators an opportunity to consider a second attempt at repeal of the military policy that bans open gay service.