Maryland voters upheld gay marriage in a statewide ballot question Tuesday.

Maryland and Maine, which also passed a historic ballot vote, join six other states and the District in allowing same-sex marriage.

Early results showed about 51.5 percent supporting Maryland’s Question 6, with 48.5 percent against gay marriage.

Maryland and Maine became the first states nationwide to approve of gay marriage through a ballot initiative.

“Today the marriage equality map expands to Maryland, giving thousands more loving couples the opportunity to make lifelong commitments through marriage,” Human Rights Campaign President Chad Griffin said in a release.