BOSTON (State House News Service) – Republicans in Massachusetts, including Gov. Charlie Baker and Lt. Gov. Karyn Polito, have joined their counterparts from around the nation in calling on the U.S. Senate to approve a bill preserving marriage rights for everyone.

The governor’s communications team on Wednesday morning circulated a list of “Republicans, Libertarians and politically independent conservatives,” who are calling for the adoption of the Respect for Marriage Act.

“Together, we call on the U.S. Senate to pass the Respect for Marriage Act and reaffirm that marriage for gay and lesbian couples is settled law,” according to an open letter that is also running as a paid advertisement. “Passing the Respect for Marriage Act will remove any uncertainty for the more than one million Americans who are building families, taking on the commitment and responsibilities associated with marriage, and caring for the one they love. Simply put, the Respect for Marriage Act treats all American families as each of us would want to be treated.”

The advertised letter is an effort of Centerline Action, an organization that said it is “focused on forging consensus to advance centrist policy solutions capable of defending core constitutional freedoms and liberties, preserving a free market economy, and limiting the role of government in Americans’ everyday lives.”

Other Bay State-connected Republicans who signed the letter include former Gov. Jane Swift and (briefly) her 2002 running mate Patrick Guerriero, former U.S. Sen. Scott Brown, and former Mass. Senate Minority Leader Richard Tisei. Gay marriage supporters are galvanizing to protect marriage rights in the face of a rightward shift on the U.S. Supreme Court and efforts by conservatives to try to revisit and marriage equality.