The nation's largest advocate for gay, lesbian, bisexual and transgender rights has endorsed Rahm Emanuel for Chicago mayor.

The Human Rights Campaign reiterated its support for Emanuel on Monday, the day before Chicagoans head to the polls.

“HRC is proud to endorse Rahm Emanuel for mayor,” Joe Solmonese, president of HRC, said in a statement.

“A former White House Chief of Staff and member of Congress representing Chicago's northwest side, Rahm has a consistent record of support for lesbian, gay, bisexual and transgender Americans.”

“While in Congress, Emanuel scored 100% on the HRC Congressional Scorecard for each of the three terms he served. More recently, he was a key driver behind the president's executive order on hospital visitation protections for same-sex couples.”

“Having worked closely with Rahm over the years to pass hate crimes legislation, extend hospital visitation rights to LGBT couples, and pass 'Don't Ask, Don't Tell' repeal, I know that his dedication to the LGBT community and his commitment to fairness make him a stellar choice for mayor.”

While Emanuel is considered the front-runner in the race, lawyer Gery Chico has gained significant traction in the race's final weeks. After Illinois lawmakers approved civil unions for gay and lesbian couples, Emanuel and Chico urged them to press on toward marriage.