For the first time, Democrats are planning to include support for same-sex marriage as part of the official party platform at the Democratic National Convention.
The move was approved unanimously on Sunday by a platform draft committee that met in Minneapolis, and is slated to be approved by the full committee in August, according to reports.
The convention itself is scheduled for early September in Charlotte, N.C.
A source that was present at the meeting told Politico that the decision was "not controversial."
In May, President Barack Obama voiced his support for same-sex marriage,becoming the first sitting president to endorse marriage equality.
Many top-tier Democrats began pushing to put same-sex marriage support on the party platform early this year.
Senator Jeanne Shaheen (D-NH), the first senator to join advocacy group Freedom to Marry, support the move after the news broke Monday.
"I am proud to see the Democrats take an important step in standing up for the rights of same-sex couples," she said in a statement.
"I urge the full platform committee to adopt this pro-gay marriage plank in August," she added.