empty chair
verb1
To draw attention to (a person who is absent from a debate) by providing an empty podium or chair which they would have occupied.
- "The BBC, ITV, Channel 4 and Sky have said they will “empty chair” any party leaders who refuse to take part in their revised proposals for TV election debates."2015, John Plunkett, TV debates: broadcasters will 'empty chair' leaders who refuse to take part The Guardian:
- "When later asked if Ms May would be “empty chaired”, a spokesperson also refused to rule out the possibility, saying the full plans would be announced in early May."2017, May Bullman, “TV broadcasters considering 'empty chair' for Theresa May after she refuses to take part in leaders' debate”, in The Independent: