Oireachtas members, staff and visitors are being asked to remove emblems ahead of the same-sex marriage referendum.

A number of TDs and staff were wearing badges promoting a Yes vote in the upcoming referendum.

Ushers were told on Wednesday to remind people of the long-standing tradition when they entered the House.

A spokesman for the Houses of the Oireachtas confirmed “members, staff and visitors asked to remove emblems”, to comply with rules.

He added: “Emblems of a party-political nature should not be worn or otherwise displayed within the parliamentary precincts, an exception being made solely in respect of persons attending the distinguished visitors gallery.”

Sinn Féin leader Gerry Adams wore his while questioning Taoiseach Enda Kenny during leaders’ questions recently.

Minister of State at the Department of Justice Aodhan Ó Riordain is believed to have been asked to remove his in recent days.

All political parties are supporting a Yes vote in the same-sex referendum on May 22nd.

The Oireachtas Code of Parliamentary Standards bans the wearing of emblems of a party-political nature.

Three years ago, Fine Gael TD Frank Feighan was criticised for wearing a poppy in the chamber.