I wonder whose that is?

New Zealand Parliament – 8. Election Spending?Government Department Material

Hon Bill English: Has the Minister seen reports that video footage of Cabinet Ministers singing at the Labour congress is available on YouTube; and can she tell the House whether this is now a political advertisement supporting the Labour Party and, therefore, it requires authorisation, or is it, in fact, an attack on the Labour Party and, therefore, it does not require authorisation?

Could it be this Video?