The Maryland Senate voted Thursday evening to legalize same-sex marriage, the latest sign of growing national recognition of such unions among gay and lesbian couples.

Gov. Martin O’Malley has pledged to sign the bill into law, which was approved last week by the House of Delegates.

“All children deserve the opportunity to live in a loving, caring, committed, and stable home, protected equally under the law,” O’Malley said in a statement after the vote.